Finally emptied out the back room of the basement and found my rear surround brackets, yay! I can finally mount them like they are supposed to be.
I also sketched out and measured for my media bookcase. I'm allowing about 8 1/2 inches of height per shelf (it's really 9 3/4 from the top of one shelf to another but I'm accounting for the face trim and shelf thickness) and the sides will be at total of 8 1/4 (7 1/2 ply and 3/4 poplar face trim).
The media case will be built from 3/4 birch faced ply and 3/4 poplar face trim. It will get base, face, crown and shoe molding. Overall dimension will be 27" wide by 88" tall.
I plan on starting that Sunday unless the wife makes me go to Ikea for her craft desk.