Strictly for your consideration....
It sounds like you're off to a great start !!!
Consider a Paradigm center channel speaker to match your fronts.
An upgrade to the receiver could be in order...depends on how it sounds TO YOU with the Paradigms.
You could put the Klipsch in the rear as surrounds, depending on how they sound vs. the CV.
Don't rule out replacing the sub...I recommend an SVS. I love Klipsch (I own them) but I believe that other companies do a better job with subwoofers.
A 61" T.V. does require alot of sound to make it "real" !!!