Landon, welcome. From the standpoint simply of basic amplification, the 667 should be fine. The M80s are slightly above average in sensitivity and are relatively easy to drive at all safe(to your hearing)listening levels.
Nevertheless, for similar money, I'd suggest that you consider one of the Denon or Onkyo models with Audyssey MultEQ auto-calibration and room equalization. This is considered by many(including me)as being more advanced than the YPAO system used for this by Yamaha. A particularly good buy at this time is the Onkyo 707 factory refurb from
A4L for about $400.
