Man, I've been sitting on the edge of my seat to see this room grow into a studio.
From the looks of the progress, you've spent a lot of time and money, I'm sure.
I can almost tell from the last picture... is this the roof that you added on?
I know A LITTLE (only) about how to treat a room. I learned it all from Ethan and also Rod's book!
I would hate to see you waste all the Auralex, but maybe you could disperse it around the room (walls and ceiling) make it more "even". I know that's what Gullfo said.
You will need some heavier traps as well. That foam in the corner will not be sufficient in the size of room that I THINK (only) it is.
THE PLACE LOOKS AWESOME MAN.
I dig the sconces too!