The other thing to remember is that room placement makes a big difference with a sub, particularly with a real good one. It can make the difference between "boomy but no real bass" and "holy &$&% did you feel that ?". I would turn the sub down a bit, get everything else roughly calibrated, then start working on the sub.

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