I agree with sailfishben. 5.1 is enough & buy a good 5 channel amp. You can get a parasound/anthem or similar for $500 to $800. Also, consider a better center. You won't believe the difference a few hundred will make with a decent center (b&w-not nautilus series???).
What are your rears? Are they worth it? $100 for a pair of little used somethings may work way better?
What are your rears? Are they worth it? $100 for a pair of little used somethings may work way better?