hmmmm.... this is gonna take some thought.
Yeah, I have probably 70 designs of my garage loft, and probably 20 of the commercial space I don't quite have, plus the three well-done overview designs John did for the latter.
Very easy to never be satisfied.
The more I look at it, the more I like my space.... the idea of fitting a control room and possibly *3* lives spaces is great
Personally, I'd section the room off into two spaces. One booth large enough for percussion, and the remainder of the space for a control room.
Unless you do intend to record vocals, drums and guitar simultaniously.
If the drum room is a nice live sounding room, you can stand up gobos to change reflections, and absorb/baffle sound if you make one side reflective and one side absorbing.
Or, you could do what i'm doing for a home studio. I'm building a large control room, and the drum kit goes in the control room. Record dry with headphones watching the meters, then add stuff during the mixdown phase.
See, I want the largest control room I can. I can get away with this because my drumkit is huge, but electronic, and packs away into the attic very quickly. Takes me about an hour to set it up, get everything in the right place, but for tear down, I put a drumkey into a cordless drill and just zap it apart in like 5-10 minutes, plus however long it takes me to tuck it somewhere.
You've seen my drawing on "the mess" thread, correct?
Anyway, doing your drawings was a nice distraction from figuring out if I need stringers or not. I'm sooooooo struggling with it still.