2 more questions.

1 more on the surrounds, do you think a setup like this would work? it would make a bigger listening area, and how would that be any different than sitting on the right side of a theater and being closer to the right speaker?

And, I am still unsure of what to do with the subwoofer. By getting the 150 watt hsu one, would that reduce the power of all my other components to 150 watt? And would getting the 200 watt one from axiom be too powerful that it could make disturbances to others in my house? I want quality, but too much power on the subwoofer could be a bad thing. An extra $350 is alot..