VP100 and QS4 are fine. Based on your previous posts, you evidently don't have a sub. Considering your M22 mains, That is far more important than surround. IOW adding a sub and staying with stereo will give you a bigger boost than adding surround with no sub.
If you can afford it all at once, VP100, QS4 and a sub would be great. If you cannot my suggestion is get the sub first, then the center + surrounds later. Axiom's EP125 is $380. Hsu's STF-1 is about $299. Either one would be fine for your relatively small room.
