
Hello all,
I'm hoping to get some design advice for the bookshelves. I was originally going to do lighting but have scrapped that in favor of simplicity so I can get them done. I'll save learning the ins and outs of LEDs for another day.
Here is the general idea of what I'm after. The model is outdated but gets the point across:

I'd like to avoid painting so I'm looking at either a white TFL material or melamine from the box store. If I go Melamine I have to deal with PB core. If I order in a TFL I can pick the substrate, I believe MDF.
My thought is to make each unit separate, i.e. two sides and a full size back. Then when I install screw them all together in place and to the studs in the wall through the backs. I'd cover the exposed front edges with trim and brush paint in place. They need to be a few inches shy of the ceiling to allow for crown molding (not sure how much there either, never done crown before).
I'd likely make the shelves adjustable with shelf pin holes. Either bore them full length or within designated ranges (i.e. 6 holes either direction of each shelf location).
The countertop is 24" deep. The bookshelf units I'm targeting 12" deep including the entire carcass. The opening over the right desk area will be wide enough to accommodate my wife's 27" iMac with some room to spare.
Looking for advice from anyone who's been there, done that.
Thanks,
Matt