You have some good ideas but if you're going to sell soon and aren't planning on taking the soffit out, I would just do some minor changes and keep the cabinets (just add a couple cabinets). I wouldn't move the sink but just get a nice stainless steel sink and update faucet. I'd get a stainless stove vent. Remove the wall on the left of the refrigerator but then just do a small pull out pantry on the right of the refrigerator. And, put a cabinet above the refrigerator and make it look built in. A glass backsplash, can lights on the ceiling and pendants above the penninsula. I think a raised counter will make the kitchen/room feel smaller.

I think we are going to use the white subway tile to keep the budget down as I priced new tiles and it would blow out the budget. Really like the contrast grout idea to add a bit of texture and pattern. My partner is a builder and he loves the reclaimed wood shelf idea as we have a lot of spear old wood left over from the renovation. We have made a dinning table and fire place mantel from it already so it would tie in really well.

I'd shunt the stove and the sink so you have space to work between the sink and the stove, especially. And then I'd put a skinny pull out pantry to the left of the fridge to end that run, not a wall. Lots of storage, and you can get them at 15" width. I wouldn't put anything on the island such as a sink or a cooktop, blech. Much easier to have a plain island.

It's definitely more centered than mine is! My house was built in 1945 when stoves were a lot bigger and that's why my range hood is bigger than my electric stove. Anyway, when you put up your floating shelves, you can either make the left size longer and the right side shorter. It will work that way unless you want symmetry. Then, I would suggest you make the shelves the same size and put them up in the same position on both sides of the range hood, just like a mirror image.