I think the only concern about crossing M22s over at 60 hz is that you're probably going to get a slight dip in the 60-70 hz range since the M22s are already -3dB at 60 hz.

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