duramax747 - congratulations! The room is such a very big deal. Treat your AC mains like signal wires with star quad twisted runs, etc. and high grade receptacles, etc. Run off 240 volts where you can. Very worth the trouble.
No, I haven't heard the 7.2s. No suitable space or amplification yet. My amplification is going the be my good ole Classé DR6 and pair of DR9s. Bill Thalmann / Music Technology did a fabulous job upgrading the 6. The 9 project is waiting for Purity Caps (to ship in early March!) It has good reason to be equally stunning. We're dedicating each amp to mono and taking out the (funky) balancing circuitry to make room for goodies of Bill's dreams. Sometime this calendar year I hope to have the 7.2s set up somewhere that really shows them off. Not yet, maybe soon.