Good deal on Mirage speakers HT set up?

Trying to build first HT w/ used gear on craigslist. Just got an M&K V-75 subwoofer. Considering this purchase: Mirage OM-7 fronts; CM3 center, FRX 3 rears (w/ stands) for $550. Original owner, good condition, no boxes. What do you all think?

My first post so thanks for the help!

Yeah, I've read quite a bit about them, including that review, and they seemed like pretty good deal to me. I'm going to go listen to them tomorrow.

Don't have a receiver yet. Probably going to buy new because of desired features--HDMI, Airplay, etc. Was thinking about a middle of the road ~$600 Denon/Onkyo/Yamaha, but have researched very little. Would something like that power these sufficiently? Was going to start another thread when I got around to that, but would be happy to get suggestions now!