If I remember correctly the QS2s have 3.5" woofers, QS4s have 4.5" woofers and QS8s have 5.5" woofers. If you're using more than a corner of that room size for your system then you might find the QS2s are a bit small and have to work too hard...

I don't have a lot of experience with different surround speakers though, so take all this with a grain of salt.

If you are only using part of the room for your listening area then the QS2s would be fine.

Will you be running the speakers in "small" mode, ie do you have a subwoofer the LF signals can be routed to, or do the surrounds have to handle all the frequencies ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8