Vietplus,
I say the RF-82/RC-62(I think that is what you meant)is a great HT setup, get the RS-52 surrounds and you will be set. If you like the Dahlqist's better, get the matching center and surrounds. Don't mix and match brands. I am a huge Klipsch fan and think for HT they are hard to beat at their price points. The RS-42's or RS-62's will also work for surrounds.
The Onkyo TX-SR805 is a beast of a HT receiver. The internal amps and power supply in that receiver are a very rare find for such a reasonably priced AVR.
Bill
Bill