For the side Surrounds I would do QS8s and about 32" to 36" above seated ear level height.
For the rears again I would have QS8's and mount them from the ceiling with the Full Metal Ceiling Bracket.
My room is the same size almost. Same think the stairs come down behind, but I got anal and built a wall up, just because I could :0 also I didn't want them ceiling mounted so needed something. Plus it gives another buffer of sound proofing than room.
Also, ceiling is open make sure you put a board in the area incase you do, so you can have something to screw into solid
Last edited by TroyD; 02/24/17 12:38 PM.
