Anthony, the thing that catches my eye is the sub placement. I'd think that in the front corner to the right of the main speaker would be the most likely location.
On the surrounds, it's unclear what you mean by a driver facing the wall. Since you'll be sitting almost up against the wall, mounting them on the back wall about 3' above ear level, facing forward, and separated as widely as possible(they're still playing side surround material even if they're mounted on the back wall)should work well.
