I ran my HT system with M2 mains for a while. The sound quality is fantastic (at least with a good sub) but I think the speakers might be a bit small for that room unless you are going to be careful with the volume (and that's no fun ).

I would consider M3s instead... roughly the same price and the specs are very similar, but the M3s seem to be comfortable at higher SPLs than the M2s.

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