If you are going for something really permanent, then you may want to consider the architectural series of Axioms. I recently put a pair of W3s in a second zone, and they do indeed give you big sound. With a room of that size, space will be at a premium, and with wall-mounted speakers, you can get the height you need to have unobstructed listening paths without having to use speaker stands... I know that in the architectural line, they have dedicated center channel speakers, but not surrounds, so I guess you'd use W2s or W3s for surrounds. I'm sure some people here have done this; maybe they'll chime in.
Whichever way you go, welcome to the boards!
