Hello,
Did you mean $800 for left and right mains, center, and surrounds?
Here I go again. As Dolby Labs specify, surround speakers are intended to go to the SIDE of the listening area, not on the rear wall. Is there room below the ceiling on the E wall where you could mount a QS4? The QS surrounds don't have to be at equal heights or distances from the listeners.
Good advice from all but I'd recommend a pair of M22ti's for your front left and right mains with QS4 quadpolar surrounds.
Check out www.omnimount.com and www.vogelsusa.com for a variety of mounting brackets. The QS4s come with brackets for wall mounting. They don't need to be pointed towards the listening area.
Regards,
