I'm thinking you will be fine. However, I prefer going with mono block amps for m80's versus a stereo amp sharing the same toroid and power supply. You'll find out as soon as you start cranking it up, if the amp shuts down or clips.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85