agent8
Thinking the same unless you are going to use the rears as fronts till you can afford the real fronts. I like Klipsch speakers but I feel that they are a little overpriced. I have a similar Denon and I love it. They too are a little overpriced but I have had zero issues with mine and it sounds great. I think you have a good system lined up there. The only thing I would do different is the subwoofer but I am partial to building my own.
As far as cables go, I would agree that any 14-16 gauge cable that is reputable will be fine. Most people wouldn't even notice if you used even smaller and cheaper unless you are doing a crazy long run.

I can vouch for agent8 - he knows his stuff!
 
I for some reason missed that sub you have picked out...  To 2nd what Agent said - building a sub is always the best if it's an option (whether car or home).  That said the sub you have picked out is SUPER overpriced.  For $500 I'd be looking at a PB-1000.  The SVS subs sound pretty good (but are pricey) and I've heard the BIC subs are supposed to be really good just a lesser known brand.  I don't have the time for building a sub so I went with a Klipsch SUB12HG after demoing them in a store locally and got it at a great price.  Frys and Newegg often run deals on speakers every few months...  Last month frys had this - http://slickdeals.net/f/9136163-klipsch-reference-5-1-surround-sound-speakers-688?v=1  and I know Newegg is running some promos right now on Klipsch ICON and Polk Monitor speakers.
 
Also if you're going to go wireless on the sub - just get a regular sub and get one of these: http://www.bestbuy.com/site/rocketfish-wireless-subwoofer-transmitter-receiver-kit/6965266.p?id=1218817520479&skuId=6965266 .  Wireless isn't the best for sound quality - but on a sub it's not the end of the world.  I use one of these on my system and have no problems because the wife complains about the wires and I am not able to run a sub wire where I need it.

Thanks for the input! I'm going to take a look at some of the other subs and see what I come up with.

kidcrumb
Is Polk still having their audio sale?
 
Some great deals from newegg on them.

I checked out those speakers on newegg. What a rip. They have the 45b bookshelf speakers listed as 129 marked down from 399. The 12" sub at $200 from $599. They are actually about 144/227 on other websites, nobody is selling them for $399/$599. That sort of scam should be illegal.

Doubles

kidcrumb
Is Polk still having their audio sale?
 
Some great deals from newegg on them.

I checked out those speakers on newegg. What a rip. They have the 45b bookshelf speakers listed as 129 marked down from 399. The 12" sub at $200 from $599. They are actually about 144/227 on other websites, nobody is selling them for $399/$599. That sort of scam should be illegal.

 
There are watches on Amazon that list for like $800 and are always 80-90% off. Have been for the last 5 years. lol.
 
I bought a bunch of the polk stuff for my setup. Shady pricing notwithstanding, its a good setup and I like it. Almost too loud for my space, but that's the neighbors problem. Not mine.