Have you considered going the Factory Outlet route?
You can piece together any speakers you want and you get a 10% discount for them having a "very minor" blemish or something on the finish of the speaker. In all honesty, i have yet to find the blemish on any of the speakers that I ordered from the factory outlet.
Factory Outlet For your size room, if you like deep bass I would recommend the following for your setup:
2 x M22s for your mains
1 x M22 for your centre channel (if you have the space to vertically orientate your centre channel M22, it will sound great, if not, I would recommend a single M3 or M2 for your centre channel)
2 x QS8s (or QS4s depending on your budget)
1 x EP350 (if you can stretch your budget, getting the EP500 is well worth the additional money)
But regardless, if you are willing to wait 5 weeks or so, go with the factory outlet, all in all, you will save 15% in total (10% for the factory outlet, and 5% for ordering 5 items or more).
