I have priced a package at my local Paradigm dealer. I have decided on the Titans and CC170 up front. The salesman recommended the CS50 in ceiling speakers for the rears. Anyh thoughts here? My room is 17x22 with the TV on the long wall, so the seating is about 14 feet from the tv. The seating has to sit on the back wall, this is why he suggests the in ceiling for the rears. Any comments would be helpful.