So, going to the lumber yard at 8:00 turned out to be going at 9:30, and then there was some last minute changing of plans, so this is what I'm now going to build:
I realized I didn't ask if they wanted the double cabinet on the left or the right and, of course, I had Sketched it backwards (no big deal, a single click reversed the thing). But he didn't like the idea of the cabinets being one depth with the microwave shelf extending, so instead of a single 12" board for the depth of the cabs, there's now 2 joined 8" boards. And no face frames, which is mainly an aesthetic thing anyway when building with solid wood. And since the micro shelf is the same depth as the cabs now, I figured for overall strength it was best to have the top go all the way across the piece.
The doors, btw, are "store boughten", and established the sizes for all the rest.
I've got about half of the cuts done and will soon be able to start making wide boards out of narrow boards. Pocket screws, glue and clamp time ahead!