Combining home theater with two channel

My dealer suggested that I add an integrated amp to the system to play music.

BINGO! Your dealer nailed it (along with everyone above). The cheapest option to dramatically improve your 2-channel performance is to incorporate a good stereo integrated (w/HT Bypass if possible but not absolutely necessary, which opens up more possibilities).

I'd try to work with your dealer to demo a good integrated — that being one that has the same characteristics you’re looking to improve upon — and see how that goes. Your speakers are revealing enough that I think you’ll hear quite a big improvement, and if they’re the model I think you have 150Wpc may well be plenty. Anyway, best of luck in your quest.

Oh! by the way, what is everyone thoughts about my purchase?

You’ve certainly chosen some nice components and I think you’ll hear a big improvement as long as the sound qualities of the Parasounds are inline with your tastes and match well with your other components.  Congrats!  And by all means let us know how it works out if you would.