I've been scratching my head for a while and cant come up with a setup. I have a large open room aprox 25x30 of which half is dedicated to the kitchen and the rest family room. I can go with a non-inwall center but rest must be inwalls. What would be the best match for the C62center for inwalls? 5.1 or 7.1? Also thinking of a Denon 1900 or 3800.

1 x C-62 Center Channel

2 x R-5800-W Left/Right

2 or 4 x CDT-3650-C for surrounds

+ sub 

Thanks!