Why are you replacing with triple sliding with double (not single)? I am you have thought through this but.... What if you replaced it with standard single door with large glass area (since you have decided to bite the bullet and replace door and spend the money).... I think this will be fine since you have access to the "deck" from the sliding door in the living room. So you still have double access to the deck. Sliding double door versus single door has the exact same access width. The only difference is the amount of light coming in. I think you have enough light that you can do this. I would not do any uppers between the frig and sink to open up the room a little. You could move the frig to that wall, so you have frig, sink, then range on the L going from left to right. This will give you more landing around the stove. I think you will still have enough room for a table in the eating area. Visually, if you are running the cabinets to the ceiling, you need trim that is as wide if not slightly wider than the stiles of the cabinets. Even if the crown is simple in detail, you still need a little more "weight" to balance the cabinets than what is drawn. If you want more modern clean line look (which would not look good with your 6 panel doors), then you can use slab or very plain doors with minimal trim.

If teal isn’t doing it for you that blue color is really pretty too and still would look gray with brass and the grey floor tile! I found a few good options on amazon for the hardware by searching brass square pulls and also these on way fair: https://www.wayfair.com/Hamilton-Bowes--Ventoux-5-Center-Bar-Pull-24128SB-24128SCOP-L1123-K~HMBW1035.html?refid=GX293766718941-HMBW1035_40348394&device=m&ptid=762818256643&network=g&targetid=pla-762818256643&channel=GooglePLA&ireid=83020192&fdid=1817&PiID[]=40348394&gclid=EAIaIQobChMIsbjP3fmW5AIVgrfsCh1oWwbcEAQYDSABEgIS_PD_BwE Here is a link to a similar light fixture! https://www.bellacor.com/productdetail/elegant-lighting-ld6042br-eclipse-brass-and-frosted-white-12-inch-one-light-pendant-2116486.htm?partid=googlePLA-DataFeed-Pendants-2116486&kpid=2116486&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_-All_Products(NEW)&utm_term=&utm_content=multi-converters_(2-5)&gclsrc=aw.ds&&gclid=EAIaIQobChMIv_64qPqW5AIVFKrsCh0HGQGgEAQYCCABEgJyK_D_BwE I think the subway tile will look classic and gives you more leeway to get a countertop that can be the star! If you picked the geometric backsplash I would say go for simple very toned down counters.

I was imagining the scenario where one of your kids lives here as a married couple for a year, or two… or more??? 😬 Here is an idea I played around with. So yes, this kitchen is bigger then the other nook ideas. But, this kitchen idea is based on my personal experience of my husband and I living in a 450 sq ft tiny house for almost 3 years. Maybe for your kids’ lifestyle, this kitchen is way overkill. But for us, the kitchen appliance sizes, food storage, shower size, and space for our bed was what was most important to us to function in a tiny house, I know what you are thinking…. No! The guests need to access the bathroom without having to go through the bedroom area. I get it! I designed my tiny home based on that very scenerio. But from my experience, whenever I had guests over, they always wanted to see the whole space. They are facinated by it. I end up showing them everything, including my bedroom. I just make my bed and clean up any random clutter. My advice is… do not design the space for the once or twice a year scenario that someone stops by unexpectedly and says, oh hey, can I use your bathroom? You panic because you haven’t made the bed! Lol! Hmm, I did not do the mesurements on a queen size bed fitting. So may need to rearrange the bedroom / bath area??? 🤔

What are you willing to change? I see the uppers are still in place as well as the counters. If that has to stay you are locked into the old layout. Honestly the old layout generally is fine but I would do a lot of tweaks like building in the fridge, extending the cabinets to the ceiling, single bowl sink, etc. But all of these things are predicated on full replacement.