I have just purchased the new R50 in the quest to assemble a nice home theatre system. I have my mind pretty much made up on a PSW 350 for my sub but an a little unsure of my center and surrounds. My receiver is an Onkyo TX DS-595 with 75 WPC RMS @ 8 ohms. Max output 140 WPC @ 6 ohms. Polk recommends that the right speakers to go with the R50s are R20s (100 W max) and a CSI 20 (80 W max). Will these do the job just fine or will I overdrive the speakers and end up trashing them? PLease help me!!!!