My kitchen is large and wide and opens into the LR, too.

I'd put the pull out trash in the island near the prep sink
Are you opposed to the MW lower? On a shelf at the end of the island? (opposite your primary sink) How much do you use the toaster oven? I am storing mine in the pantry and only pulling out as needed.

I dont really see room for a desk unless you put it at the end of the wall that has the fridge...

Hi! How exciting to get to the planning phase for your kitchen. We completed our kitchen remodel this time last year & although it is not open on one side it is a similar size with openings/wide doors to a sunroom on one side & dining room on the other. We worked with a kitchen designer since we were opening walls & moving plumbing & wanted to maximize our effectiveness. Her guidance about work triangles is that today's larger kitchens actually have more than one work triangle. Ultimately you have nice work space that multiple people can simultaneously work in.

I think it is ok that your main sink is across the room from your refrigerator. You may consider placing the prep sink at the end of the island nearer the refrigerator for ease of access or you may consider putting an under- counter refrigerator to keep veggies for dishes you are working on or at times for easy access for drinks. Having the prep sink as near the other sink as you do may create a little bottle neck, plus you'll have access to water at both ends of the kitchen -- a thought. (It looks like you have plenty of space to move around -- KD recommends 42" if you can do it or scaling down to 39"-ish between counters.)

Our KD recommended the trash pullout between the dining area & the dishwasher so that as the table is cleared anything to go into the trash is dropped there as the dishes are placed into the DW. She also recommended a breakfast center, so we have our coffee pot near the drawers with cereal and coffee. If you use your toaster oven for breakfast it can also go there. I would consider to the right or left of refrigerator depending on how comfortable you feel (or perhaps you plan to keep the cereal in that wonderful walk-in pantry). Then when you want the toaster off the counter you can lower into a drawer or into the pantry.

You also probably want a drawer for all your plastic containers. Our KD suggests to have that drawer at a place near the fridge & where you will walk from the breakfast/dining room with leftovers, fill the containers, & place immediately into the fridge with minimum steps.

I appreciate you wanting to have an above or under counter shelf for the microwave. If you want it under the counter I'd consider to the right of the refrigerator -- it seems like I am always pulling things out of the fridge or freezer & popping into the microwave. This way you won't be carrying it far. Otherwise the other end of your island could work. I recommend you consider (or at least look at) the Sharpe Microwave Drawer. It is wonderful! I can stir or test temperature without having to get on my knees to look into the Microwave or pull the dish out onto the counter. It is a built in.

How much do you use the door going to the outside? Your microwave & plastic containers can go there or your breakfast area. I guess it depends on the time of day that door gets used the most. Otherwise you can place items that seldom get used, but you want easy access to.

I agree with kmennenga about the desk. Perhaps put it on the wall near the pantry. You can have a hutch-style or desk. Have drawers for hanging files so you can manage your papers. This was something we didn't have room for. We converted the lower desk space in our old kitchen to a butler's-pantry style area & have one large drawer for hanging files, as well another drawer with a writing surface (under the writing surface is space for place mats or entertaining supplies -- cocktail napkins, small dishes, small-ish cheese trays & spreaders). Also lots of electrical outlets to plug in laptops & cell phones can be placed along side the light rail(or also in the island).

I hope this helps. Good luck with your project.

The sinks and cooktop are way too far apart. The point of a prep sink is to be convenient--but turning around and walking 4-5 feet diagonally across the main aisle every time you move from sink to range is not convenient. How about moving the cooktop 3 feet or so down the counter (so it stops right before that window) and putting the prep sink to the right of the cooktop (to the right as you're facing the cooktop)?

Alternately, if the reason you put the prep sink on the island is because you want to face people while prepping, then here's a different solution. Leave the prep sink on the island, but still move the cooktop down 3 feet or so as described above. This brings it closer to the prep sink, and also--crucially--closer to the cleanup sink. This is crucial because it lets you use the prep sink for prepping, but not for draining; when you're pouring out pans of boiling pasta water, do that in the cleanup sink, which will now only be a few feet away around the corner. You certainly don't want to risk splashing people at the island with your boiling pasta water, so definitely drain in the cleanup sink--but to make that more convenient, you need to tweak your plan by moving the cooktop 3 feet or so closer to the cleanup sink.

By moving the cooktop over, you also free up space on the end of that counter run. That space might be a good spot for the microwave and/or toaster oven. (To leave yourself enough "elbow room" around the cooktop, maybe stack the MW and toaster oven or put the MW in a drawer below the counter.) The reason this is a good spot for the MW is that it's close to the fridge, with landing space (the island and/or the counter) between it and the fridge. Virtually everything people put in a MW comes from the fridge or the freezer, so it makes sense to have them fairly close to each other--at least on the same side of the kitchen. Putting the MW on the end of that counter run will also keep snackers out of your way while you're baking/cooking etc., or at least it will if you store some silverware and the dishes that people use in the MW in that area. That way people can get a complete MW snack from start to finish (fridge, plate, MW) without ever walking past you while you're at the stove.

How wide are the aisles? They look really wide to me, but I'm tired. Without any measurements it's hard to tell. In general, I very much like your layout. The standard work triangle of fridge/sink/range is done, in your case, with the prep sink. Not the cleanup sink. You work from fridge to the water sources where you will be washing veggies, fruit, etc, which is the prep sink. How big is the prep sink, btw? Again, a layout with measurements or done on graph paper is best.

If you're absolutely set on not having a built-in MW (I was going to suggest a MW drawer), then maybe convert the full height pantry cab to the right of the sink to base cabs with counter and uppers above. The MW could go there. You could even put it on a counter behind doors that fold or slide back out of the way if you want to be able to hide it. Regardless, near the fridge is best.

What's the purpose of the desk area? To act as an office for filing and paying bills? Or just recipe scanning and meal planning? If it's the latter, you could do that on the island. The only place I see for an office desk is right of fridge.

Most trash is generated during prep. I would, and will in my kitchen, put the trash pullout at the end of the prep island nearest the cleanup sink. Alternatively, put trash near both sinks. I compost all table and prep scraps including meat and bones, and I have a garbage disposal for the little bits that escape the compost so I could get by without a dedicated trash for the cleanup sink.

The prep sink is fine where it is. You need some landing space for items going into and out of the fridge. Very important. The island is the closest area for that. You might want to scoot the fridge north a bit for a more convenient landing. Besides needing landing space, I like the prep sink locale for another reason. I much prefer to have my range across from my prep counter, NOT the sink. And you don't want a prep sink right in front of a stool. Leaving the sink where it is gives you a nice, uninterrupted prep space.

Also, I don't move from sink to range often. Only when filling or draining a pot. Most of my moves to the range come from my prep counter directly across from it. I don't see the bottleneck mentioned above with your sinks like that.

Other thoughts:

Where does that southern doorway lead?

It looks like your cleanup sink isn't centered on the window. No big deal. But have you thought about centering it? You could move the DW to the other side of the sink that way. Having it not open across from the island would make it a bit easier to load and unload without blocking the aisle.

How big is the overhang on the island?

Is the island your only dining space? If so, I'd think about this very seriously before you eliminate any actual space for a table in the house. I would never buy a house myself that didn't have at least one actual table for being able to enjoy a meal with my kids while staring into their beautiful blue eyes. Sitting shoulder to shoulder at an island for that doesn't work for me.

Can you answer some of the questions in Buehl's layout help guide from the "Read Me" thread please?