First, there's not enough information on your scenario to recommend changes. Simply recommending changes to ANY SYSTEM, without knowing all the variables that are involved, is like driving blind-folded! More info needed on your setup and life-style habits, I'm afraid.
I mean, what is your application and life-style with the system? Do you do movies only?...or what ratio to movies/music? Do you sit between the speakers, or do a multiple seating? Do you move around the house listening to music with the system, or are you always anchored in your seats. Do you rock and roll, or are you a low volume listener. What are the acoustics in your room like?
Personally and professionally, I don't see how anyone could possibly offer you remotely any kind of sound advice with what we know from the data you've presented!
It is quite posible, that with your setup, room, acoustics, lifestyle, and budget, that some of the pieces you have are excellent choices! Then again, they might be the worst ones also. Again, not enough info to assess. I, for one, would want to know more before I said, "do this upgrade, that change, or this modification, etc."
Can you tell us more, please???
