I had read a lot of similar things which is why I want to tinker with the crossover point. I would assume setting the crossover higher wouldn't have a negative effect for movies especially if like you said the LFE is set at 120. If I set the crossover higher the LFE is at 80 I'm not losing anything but in reverse maybe some frequencies are lost in the mix if the AVR can't reroute certain frequencies to the mains from the LFE channel.

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