I have to second Ack bk's recommendations, I think you could do a lot better for the money.
First of all I like Klipsch, but their specs for their Reference line is not accurate at all; they badly over state their sensitivity specs. If I was going for high sensitivity speakers for behind the screen on that budget, I would go straight for the JTR single 8
. It is a true high sensitivity speaker and is meant for rear AT screen placement. I would wager those would spank some RF-62s all day and all night. By the way, you might be able to just pick them up from JTR, they are in Chicago.
Also, I would definitely not go for bipole speakers for a 7 channel system. That kind of defeats the purpose of discrete surround channels. Your surround soundstage would be a messy blur with four bipole speakers. I would just go for some nice beefy bookshelf speakers like some Klispch RB-51s or Hsu HB-1
s. They will perform better and they will cost less. Use these Videosecu mounts
to mount them, you can not get better mounts for the money. Go with Dolby's recommended speaker layout for 7.1, and try to angle the tweeter to face the listening positions.
As for the subs, you can do much better. I would go for either dual Hsu VTF3
s or dual PSA XV15
s. Dual Hsu VTF15h
s would be more appropriate for those speakers but puts some real pressure on your budget. Those would sound great. A single powerful sub will get you more output but at the cost of a more even bass sound. For that, you might check out the aforementioned Rythmik FV15HP. The PSA XV30 would also be good for that. You could add another one later to even out the bass.
As for the receiver, I would go for the same one that Ack recommended, however the last time I bought a refurbished Denon it only lasted a month. Anyway, the speakers Ack and I suggested are so sensitive it doesn't take a beefy amplifier to make them blaze, so don't worry about underpowering.
Remember not to get your cables from Bestbuy or Radio Shack. For HDMI, order them online. For speaker cable, just get a 100 ft roll of 14 AWG from monoprice.com or Home Depot. By the way, Fry's has some good deals on receivers and bookshelf speakers at the moment, and you have one not too far from you, if you didn't already know. I would recommend taking a look at their Yamaha and Pioneer receivers right now. A great deal on bookshelf speakers they have is the Infinity Primus p163 for $60 each. These are fairly heavy duty for bookshelf speakers and could be used for surround speakers very easily.