Those numbers look pretty good. Avoid that extreme measurement like -11 pr -12 by dialing back the volume/gain on the back of the sub. The +4 and +6.5 from MCACC on the Aperion surrounds might be giving you have high readings because the speaker is set to dipole. This speaker has a switch for multiple surround options. Dipoles by design are out of phase and might cause issues with the auto cal. If the switch is set to dipole try the bipole setting for the surround calibration and see if the readings change at all.
Make those two changes and re-run MCACC.
BTW what are the crossover settings on the speakers?
