BR, welcome. The 802Ds are fine speakers, but listening to a setup which featured them may have misdirected your attention in making changes to improve your present setup. My view, after studying your components, is that, at least initially, bigger main speakers aren't the best use of your money. Specifically, it appears to me that a more up-to-date receiver and superior side surrounds(the QS8s)should have priority. The new setup should be M2 mains(with the Hsu, of course), the VP100, and QS8 side surrounds. The M3s could either be used with the 596 in another room or as back surrounds with a new 7-channel receiver in a 7.1 setup.
This is, of course, entirely different from what you've had in mind, but bigger main speakers should be some distance down your list of things to get. You should have a modern receiver with room equalization, and listening modes such as DPLII which allow you to enjoy the surround ambience trapped in 2-channel music in surround, which greatly improves listening results. Very wide dispersion side surrounds like the QSs maximize the appreciation of this.
As to a new receiver, you might consider a unit such as the Onkyo 709 factory refurb, available from
Accessories4less at a very good price.
