This is a conceptual design of our home. I don’t plan on adding upper cabinets above the “island.” We are changing the door from the pantry so it faces the kitchen.

There seems to be a lot of space wasted on hallways on the kitchen side of the house. If it were me I would put the kitchen where the dining room is, and have a great room open area with living/dining side by side and a larger kitchen. To me an eat at island, plus breakfast nook, plus formal dining room is a bit overkill. So I'd move the office to the breakfast nook, and use the old office space as the pantry, and use the old pantry space to expand the guest bedroom suite. Here's a quick sketch. I traced your floorplan so it's approximately correct.

When you do a gallery wall consider a 30" deep counter to get the most production out of your run. Drawer base can be ordered with 27" undermount Blum slides. Or you can space standard cabs out from the wall with blocking. Uppers are 12" deep and can be dropped to 16.5" above the counter surface. Don't forget work surface lighting without shadows.

Ventilation is always tricky in kitchens with no exterior walls. Might want to rethink that part of this concept.