Could I use the M2 as the rear instead of using a 30 degree angled in ceiling for the 5.4.6 Atmos? Since the rear height has to be angled anyway I would think that work. Has anyone tried it?

LFR1100
VP180HP
EP600
M3 In Ceiling x 4
M5OW
M2 - Atmos rears
ADA1500.5
M3 Outdoor Speakers
ADA 1000.8