That is a pretty good size room(5000 to 6200ft3 +) and larger/dynamic speakers may be in order. Klipsch speakers are dynamic and efficient and I would not vote against them in your room. I think a full Klipsch RF-7II setup(RF-7IIs, RC-64II, RS-62II's) would be a good direction to go. This setup should run you in the range of $4500.00 to $5000.00. Mate them with a pair of SVS PB2000 subs($1499.99 shipped) and that would leave you with $3500.00 to $4000.00 for a flagship AVR or a midlevel AVR and a 5-channel outboard amp.
Sell your current speakers and apply that +/- $400.00 to your new setup.
Bill
Sell your current speakers and apply that +/- $400.00 to your new setup.
Bill