I have a limited height ceiling (87" to joists) I have a bit of a budget ($1500?) to cover the ceilings and walls. My main priority is limiting reflection, I am not too worried about sound except to the degree it bounces around right in the theater. Can I just paint the ceiling (or should I use some fabric etc.) and the same for the walls. I am wide open to creative solutions or even an education on the basics. The room is L-shaped and I am projecting from the middle into one end of the L. Roughly how far back to do I need to treat the ceiling and walls? Need to hurry winter gets here fast!