Do you have a floor plan with all dimensions filled in? It will help you get better advice if you do. You can draw one on graph paper if necessary.

Floor plan with dimensions

You have a basic plan with good flow. Although it would be nice to have the wall open where the fridge will need to be, a functional kitchen is better, IMO. It looks as if you have more than 54" between the island and sink run, so I'd suggest making the fridge surround (or stub wall) deeper, and the cabinets on that wall extra deep, to make the fridge look more built in--you don't want the sides of a standard-depth fridge to show. I would use drawers for all base cabs, if possible, and use a 36" super susan in the corner. Or, if making the sink run deeper, void the corner and add the extra space to base cabinets on each side. Will you have a trash pull-out?

NKBA guidelines

New to Kitchens? Read me first.

Discussions--Extra-deep counters

Love the advice! On the left of the fridge we have a slider glass door that goes to the deck. There should be about 8” from when the fridge panel ends and the slider begins (we originally wanted a foot but to make the lower cabs useable on that side we needed those few inches) we are planning to get a counter depth fridge.

We ended up changing the cab to left of stove to be drawers, and made the lazy Susan 33” to stove but 36” toward sink and reduced that cab between the lazy Susan and sink to a 9”pullout.

Do you think the 33” wall cabinet next to fridge (between fridge and window) will be too “chunky” ? It’s going to be huge, awesome storage but don’t want it to look odd.

This is the updated layout we purchased, but we have it on hold for production to make some tweaks if needed!

I'm not such an expert, but I'd take into account that sometimes people temporarily need a place to stack space-hogging items, such as large pans, either horizontally or vertically. So the 18" cabinet you had in mind might work well for that, or even a wide drawer at base of under-sink cabinet, or even the space on top of the wall cabinets, however ughy.

Secondly, since you need space-efficiency, i guess you know already about Accuride full-extension drawer slides which offer more drawer space (even if the sides are ughy when they're open).

Here's one sample pic:

https://www.rockler.com/media/catalog/product/cache/5c5edcf249a74e99ece620285918bb9b/6/1/61440-01-1000.jpg

Thirdly,if it were me, I'd want to set up the microwave where I'd have the least exposure to EMFs. I've no idea where you guys hang out the most within your kitchen, but wherever it is, I'd wanna route any potential EMFs furthest from there.

Fourthly, mama goose, I agree that the more drawers the better (but also perhaps one bank of drawers should be a configuration of Four-drawers, and the narrower bank of drawers should be a configuration of Three-drawers (two of which are deeper.

...as for your Q about trash pullout, here's an ingenious guy who came up with a Kick-to-Open pullout (I think its the simplest of any i've seen, at least for a carpenter, which is NOT me:

https://www.youtube.com/watch?v=sRLpS4cDZso