Up, welcome. We'll go with cu rather than sq and say that in a room that size the M22s would be excellent. With proper speaker positioning you won't be more than about 7' away and the M22 drivers will "blend" well at that distance. It's also likely that they'll have the ability to play as loud as necessary to fill the room. You don't mention if you're considering a sub, and if you're not, a tower speaker would have more bass extension than the M22s, which have usable output down to about 40Hz with room reinforcement.
