Welcome to the forum.
I would go M22s up front and bump up the sub to the EP350v3, it is a great subwoofer that will shake the floor. The EP175 has been said to not have the power to do this. I have heard and felt the EP350 and it will do what you are looking for. I would also bump the QS's up to the QS8s as they are a slightly better performer and worth the upgrade.
For floorstanders I would go M80s and stay the course for the other speakers as I mentioned above. From the Factory Outlet this comes to $2416 and you will not be disappointed by this system.
