seanandredj makes a good suggestion for AR cables. They make good wire too, but you can do just as well with other brands. In my system, I have AR Pro Series cables (digital coax, s-video, composite, and audio) and an AR Master Series component video cable. I'm running a mix of AR 12-ga wire, SoundKing in-wall 12-ga, and Home Depot (Carol) 12-ga wire. I am extremely pleased with the performance of my cables and wire, and you can get it all for excellent prices (much cheaper than what you were planning on in your original post). Check out the AR cables and wire at
Accessories For Less. They just started carrying AR's Master Series cables as well if you're interested.
You can also check out
Parts Express for more wire. I think you'll do just fine with a 12-ga wire that you can get for .30 a foot. Parts Express also has a plethora of banana plugs or other connectors to choose from as well. I've had great success shopping from both of these companies. Good luck.
lando