I plan on getting a HK AVR635 or A Denon AVR2106. For speakers I want to get a set of M50 v2's, a VP100 v2, and a set of W2's for the rears. The room is 16x17 with a cathedral ceiling. Do any of you see any flaws in the components and secondly do you think i would need to get a sub also?

Thanks in advance---Scott