Micah, I would not assume you need an extra amp until you try your Denon and then/if you have problems. Heck, my 2805 from 5 years ago drives my 80's with no problems, and I occasionally crank it up.

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