I'm considering the Anthem P5 amplifier. I know the Triton Two can handle it but at 325 watts per channel am I going to hurt my SuperSat 50 and SuperSat 3's?

As long as you set an appropriate crossover (I'd suggest 120 Hz for the center and surrounds in that system), there's no reason for concern. One of our dealers that I've visited has a TritonCinema Two system set up with an Anthem stack with the P5 and it SINGS... and sings really loud. Sounds spectacular, have fun!