Seriously, if you have a sub with the M22s stop worrying. When it's time to upgrade, get a better sub.

If you move to a much bigger room, think hard about bigger speakers. Enjoy !!

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