The fact is, with those speakers and sitting 4 meters or closer you can hit reference level with just 100 W.
Even a light weight AVR-X3600H can drive them without the emotiva amp. Reference level to a lot of people, should be considered "mind blowing concert effect".
Since you have the power amps already, why not get a Yamaha CX-A5100, or Marantz AV7705, or AV7704? If you want to stay with AVR, then anything from the AVR-X3600H, or SR6013/6014 should give you the same sound quality as the prepros, for half the price, but then the internal amps will be just idling. Idling the internal amps is not a bad thing though, as you can then engaged ECO full time.