One thing I would add, is make sure your Sony will have no problems driving the 4 ohm m80's without overheating or going into protection mode. You may want to check with Axiom.. Historically, Denon, HK, NAD, Seperates, and a few others have had no issues.

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