Zeke - right now I'm sitting at $20K and it's 99% complete. I figure about $700 will finish it up with glass, baseboards, etc. The only thing I didn't do myself (with the help of friends) was pour the slab, erect the "butler" type steel building and run/charge AC freon lines. The friends who helped are from another band I record. Their dayjobs are house framing. The trade was they have perpetual free recording time. Good for them, good for me. Barter system at work.
Unfortunately I do have some parallel walls. This will be compensated with wall mounted diffusers/absorbers on opposing walls and bass traps in the corners. None of the rooms will be dead, just as balanced as I can get them.
I'm located near Albany in Southwest Ga.
DD