If you've got the green, the system that you've just mentioned seems very popular, and is likely to satisfy.
About overpowering the room - it has been said that percieved loudness is different listening to better speakers (i.e. you can play better speakers at a higher volume and enjoy them more without some of the negative side-affects - like distortion - that mar lesser speakers when turned way up). And, who knows, when you get into HT with these puppies, you may wish you had a little more umph in your system...
This, way, you're getting the best, now you can forget about the rest ( -- no buyers remorse, no upgradeitis -- )
