I'm setting up a new system. I'm using a Yamaha RX-v665 with a bi-amp set up on my RF-62s. I have the option of using one of two center speakers. An Sc1, which fits well in my cabinet, but may be overwhelmed, since it does not permit bi-amp setup. An RC3 ii, which I can bi-amp using center + rear center on the amp, but requires placement on the floor, or a new cabinet to setup. My room has brick and glass walls, a hardwood floor, and a shallow cathedral ceiling with wood rafters. Also, any recommendations for Surround speakers?