I picked up a Paradigm Ref Studio 40's, Studio 20's and CC center. I'm going to be running it using an HK 525, 85 watts across 7 channels. So, my first question is, is this enough power for this setup? If not, how do I go about adding more? Do I buy an external amp? I really don't know much about amps or how they work exactly, in releationship to a receiver (Yes, I've read a lot of FAQs/posts around here). Thanks for any help.