Tater, do you really feel you need rear speakers in that size of room? as I mentioned, my room is virtually the same size as yours(19x13x8) and to me, I'm not feeling I need the rears...perhaps if the room were 3-4 ft longer I'd consider it. A single rear in the centre might be ok, but imo 7.1 could use more space.

Half of communication is listening. You can't listen with your mouth.