Hey Paul (and welcome to the forum!):
Yamaha is not on the list of receivers that are generally recommended for driving the M80s. But, I don't think that's a bad thing if the Yamaha has the features you wanted.
I believe that the M60s, if mated with the EP500 sub, will do very well for your action movies in your room. How far away from the front speakers will you be sitting? Set the M60s to "small" on your receiver to let the 500 take much of the burdon off your receiver and the M60s. Honestly, if you were committed to the M80s, I would recommend the EP500 for those action movies anyway.
FWIW-
