Newbie here and I have a few simple questions. I am building a new game/TV room that is going to be 20 X 40 in size. My question is, can I place my big screen TV in one corner of the room and set up a 7.1 system to cover the entire room, or should I just focus on getting the best sound to the (TV area) roughly half of the room? Also, would it be better to place the TV on the 20 ft flat wall instead of the corner for better speaker coverage or will the corner placement be OK. Finally, the ceiling is about a 15' cathedral. How best to place my rear speakers? Stands are not really an option (pool table), so could I mount from the ceiling (might look kind of weird) or can I go to the back wall and have them facing the TV about 38 feet away? Thanks in advance for the help and I can clarify anything that is not clear.