Fwiw, I just mixed faux-marble quartz (Lagoon) with a Carrera backsplash and at least in it's pre-grouted state, I'm really happy. It was hard for me to find a backsplash that worked well with the grey-ish tones of the Lagoon, mostly because my cabinets are painted taupe. Anything that "matched" the cabinets seemed too brownish for the counters. The Carrera blends the two perfectly. I think it also works because I wound up using a very small-scale herringbone pattern, so the patterns in the marble tiles are less pronounced. Fwiw, I don't see the calacutta tiles that the OP posted working with a greyish quartz that's similar to Lagoon, and I'd also be concerned about pattern overload with a subway tile. But having worried about the fake-next-to-real problem, I wanted to at least add my experience that it can be done. One of the prettiest kitchens on here, done by a pro, is GW user @kompy, who used a different marble subway with Lagoon counters, and it looks stunning.

Sorry, for the late reply. I just saw this. No, we've had so many other issues come up with the build that have required all my attention, I haven't had time to focus on this. I do plan to use 30"-36" sinks. I will let the final cabinet layout dictate the sink sizes, so long as we are in that range. If I have an extra 3" of wasted space, I'll go up in sink size, or if I need a few inches for the trash can, I'll go down a couple inches on the sink. The main thing I haven't decided on yet, is whether they'll both be apron sinks or one apron and one under mount. Or, one stainless steel and one fire clay/ceramic/etc? Oh boy, I guess I have a little more left to decide than I thought! I think lead time and prices will point in the right direction on material! LOL! @vevmom, if your island is 10' long, I think the 33" sink will work nicely. That is still less than 1/3 of your island. I think bbtrix's photos above are great for helping to visualize this. (Thanks again bbtrix!) That island is 8' long with a stages 45. You'll have 2 more feet of island, plus a smaller sink. Let me know what you decide.

Stacy, I have the Akurum line which had the split top drawer standard. It can be done by mounting a divider to attach the rails to. That is how I do the individual trash pullouts under the sink (see the under sink photo I posted earlier) . I dont necessarily think split drawers are an advantage because you lose about 3 1/2” storage. I like the off-white Bodbyn. It’s not yellow in my kitchen which does have warm lighting @ 3000K and lots of wood which causes it to photograph with a yellowish cast. Look back at my daughter’s kitchen to see how the Bodbyn looks next to bright white subway tile. She has warm lighting too. Also, Ikea has a new door, Akstad that is bright white. Hope you find something you like.

I never use my colander or wood cutting board. Plastic goes in the dishwasher, but wood does not. My workstation extras are in the garage gathering dust. Here is an idea... Most people do not use both double ovens except for once or twice a year. You could skip the double oven and use a 6 burner stove/oven with no drawers below. Put a microwave drawer to the left or right of the stove/oven and your deep pots and pans drawers on the other side. You may want to consider a different vent hood so you have cabinet space above the stove. I would hate to clean that open vent hood and its chimney pipe all the way to the ceiling and on a ladder with my bad back. I love the look of your vent hood plans, but I am too practical (or lazy?). Move refrigerator over a little to create a tall 24" deep cabinet for a vacuum or broom or cleaning supplies, large kitchen items... The other side of refrigerator could also be 24" deep and hold your food items. (No countertop.) You could use a counter depth refrigerator. I love mine because it is shallower and I don't lose stuff in there. You already have a water line there because of your washer so your ice maker can get connected. The cabinets on the dining room wall could be tall with no countertop or you could move the sink and dishwasher there. I like an island with nothing on it so I would hate a sink on my island. The island could be moved back where it does not begin until the corner. That means you do not have dead space. The dishwasher and sink could go on the island with bar stools or regular chairs right before you get to the light switches and the exterior door. I have very little countertop space in my kitchen because it would be full of crap. I have landing areas for hot things from the oven and the rangetop, for refrigerator things, and for dishwasher things. I have a raised dishwasher which opens up at waist level. Easier on my back. Mixers, food processors, Dutch ovens, Instant Pot, electric can opener, and other large items go in 24" deep cabinets. I have to move my mixer, etc to the island to use them, but that is good exercise since my mixer weighs 25 lbs. If money grew on trees, I would do this... ... Move the breakfast room and roof line back 4-5 ft to be even with the new living room? The two corner walls are load bearing so you would have a 4-5 ft wall between the living room and breakfast room and you would lose the living room door to the deck. Upside down L shape. The breakfast room door would be at the end near the railing. That gives you 4-5 ft more space and a view of the living room. You could put the sink and dishwasher on the deck wall and have an island which faces the new living room. Seating at the island could be with bar stools, or that part of the island could be lower, and regular chairs could be used. Keep the tall windows because of the wonderful light coming in, and you still have a walkway to the exterior door to the deck. You are so lucky your house is giving you many options. Most kitchens don't have closets and laundry areas that you can remove. I can't wait to see what you decide to do. I know it will be amazing.