Here is a good receiver, that meets your requirements:
http://www.crutchfield.com/S-ooBmcke...0&I=580TXS605B
You can start looking here, for floor standing speakers:
http://www.crutchfield.com/S-ooBmcke...up.asp?g=12000
Then, you still need a center channel and subwoofer.
Or, you can get some excellent bookshelf speakers, like these:
http://www.svsound.com/products-sys-sbs_black.cfm
and put them on stands, like in the picture, so their footprint is like a floorstanding speaker. A big advantage to these, is that the sub comes with them, and SVS makes one of the best subs you can buy.
I don't think you're gonna find a whole system, that meets all your requirements, for the money you're talking about. Not a good system anyway. Of course, I could be wrong.............

Good luck!