I guess I should have asked earlier, but how have you broken up the ceiling lighting into different zones? I see a few cans up there, but I find that this is a fairly easy change that many people miss. You definitely don't want ANY sconces on during a movie, they broadcast light throughout the room and onto the screen uncontrollably. Severely impacting image quality. Ceiling cans, especially certain trims/lamps direct light in a spotlight pattern that can nearly eliminate any light falling onto the screen. Standard lighting in a theater calls for at least two zones, one for 'general room lighting' and another for 'seat lighting'. The seat lighting provides lighting directly over the seating area and can provide 50+ watts of lighting at the seating position to read, eat, and move about the room, while almost no light falls on the screen. This is the 'sporting event' lighting that can be amazing.
Meanwhile, for cleaning and general entry/exit from the room, the rest of the ceiling lights are turned on. Wall sconces are for entry and exit from the room and are nothing more than decorative artwork rather than a purposeful piece to any theater. That said, awesome sconces are still awesome. I fully intend to put in a great deal of useless lighting in my theater for dramatic entry/exit effect, but the lighting over the seating is critical to best image quality and a good room.
Also be aware that if the room is painted dark, and has dark carpet/ceiling, then you need about twice the lighting of a typical family room to achieve the same brightness levels. So, instead of 4 lights in the room, you would need 8 or 9. (3 rows of 3) The back row, over seating, should be the ones on a different dimmer. So, 6 lights can be off, the wall sconces can be off (or VERY low) and the lighting right over the seating can be on and allow the guys to hang out and watch the game and eat, without being in a complete cave.
I have some example photos of good lighting here:
http://www.avintegrated.com/lighting.html