Are we talking about building a commercial tracking studio?
There is something out of balance here . . . spending $50K and posting on the newbie board, for starters.
Other things:
32 channel board and a grand total of 7 mics? Do you already have some mics? Seriously, you'll need a few more vocal choices than the 103, 4000 & 58, plus a couple of pairs of SDCs, a pair of LDCs, a good quality dynamic, a ribbon, an omni, maybe a PZM. A tracking studio needs a serious mic locker.
Put a little into the building? What is the building right now? How big is it? Big enough for a control room, big live room, iso booths, bathrooms, kitchen? I'd budget at least $10K for the building and that's if you just need some partition walls and sound treatment.
There's more . . . but quite honestly I have $15K in my studio, so I know how to spend that much on a studio and how to work that studio. I dunno how to do a $50K studio. Do you know how to work in one?