Built with lots of advice from a few folks on here.
<Thanks to all who helped>
18 months planning, probably 6 months building (did the whole basement in a year).
It's tiny, crowded, and mine, all mine.
11' X 11.5' X 7'-1"
something like 92 sq feet of absorption (OC703 equivalent 3" - 4" thick.
16 channels of input, Motu 2408 X 2, all in-the-box.
Only new equipment purchased were headphones, headphone amp, couple of mic cables, and the parts to build the computer. This is a pretty lean budgeted affair.
Double walls, two leaf, double doors, pretty decent isolation (have not measured it) wife says she only hears drums, and inside you rarely hear anything from the outside environment