That amp will power speakers better than any receiver that I know of. Most receivers' spec sheets are a bunch of BS when it comes to ratings. They'll take one channel at the easiest to reproduce frequency for a millisecond, and measure it for a nanosecond. This is how they can get away with figures like 170 watts x 7. Your amp's specs are legit. If it says 150 x 5 or whatever it is, you can bet every channel does that simultaneously throughout the entire frequency range. You can also bet that it'll drive low impedence speakers without a hiccup.
Sorry if I sound like a salesman. To me, it would be a no-brainer. But I don't have your room, space requirements, budget, preferences, etc.