I would look at the Axiom M22ti or M50. You would need a sub with the m22ti and I would recommend Hsu for that.
You could also look at Ascend Acoustics.
For a receiver, the yamaha rx-v2500 is an amazing receiver but you could also get the rx-v1500 or one of the htr series. I have a htr-5890 and absolutely love it.
The main thing with speakers is that they have to sound nice to you, go to your friends place and put on some of your music, and if you are completely happy with the sound of the infinity's, then get them.
But listen to every speaker you can to see what you like, no speaker will be perfect, but generally a few will stand out to you and then you start looking at other details about them.