I think Home Depot has a brand they offer special order. Less expensive than Naturcast. Naturcast is high end, top of the line...nice stuff! Figure about a grand per cabinet.

Try posting this in Design Dilemma category too. Lots of good color experts there. I'm not one of them, but they post a lot. You may also want to indicate where you are located. I'm in a climate that has a lot of mildew and red clay. That would definitely keep me away from those light colors, especially for the flooring.

Do you need it to be so wide? You can't reach over and clean a 4' wide cabinet. You'll need a ladder or need to sit on the countertop. Our outdoor countertop gets dusty very quick and needs to be wiped down multiple times. How are you supporting the overhang as designed? What kind of counters are you planning? In lieu of the toe kick, could you make the entire counter counter height? That gives more space for cooking and for seating. I rarely see bar height counters. I strongly recommend incorporating as much storage as possible. We maximized our storage and still wish we had more.

I would avoid any countertop receptacle in such a location because rain will inevitably find its way in. And I presume you are aware that any outdoor receptacle must be GFI....