Tdaudio,
It looks like the 7 would be the next logical step in what appears to be an amazing system you've assembled. Yours is one of the rare systems here in which all the pieces make sense to me(more than my own). My room is actually similar to yours although I didn't do the work myself. I say buy the 7s and let us know what you think. You're ideally set up to let us all know what these can do.