How loud do you plan to crank things up? Our living room upstairs is 1,000 cu ft larger than yours, my old Denono 2805 gives me more volume/performance then I would ever need driving m22's and a ep350.

My basement is 8 times bigger than yours and my Denon 3808 drives my M80 7.2 setup with no problem.

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