The reason for 2 center channel speakers is that 1 of them is for the front center speaker while the other is for the rear surround speaker.
What do you mean by "high end" systems?
The dimensions are around 10x10. Unfortunately, it has hardwood floors.
Budgets are dependent on the situation. E.G. What I would have to do and why.
As far as selling what I have, what suggestions would you have? I was under the impression that the CVs were a high end speaker. I assume that there are better ones out there, but I'm not sure what. When I bought the speakers, I listened to the Bose and the Paradigms, but they didn't really provide the "jam" abilities that the CVs did.

Thanks for your time!