Welcome.

Nice work so far on your ht room...

IMO invest as much money as possible into your speakers and subwoofer(s) for a 5.1(2) system instead of stretching your budget out over a 7.xx system. Skip the rear surrounds for now and invest that money into the main speakers or the sub(s) portions. Also instead of 4 M22's, 1 pair of QS8 will be more than adequate.

Good luck and have fun!

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne