We're going to be doing some work in a wooden cabinet this weekend to install a pretty fancy surround sound system. The cabinet is a hardwood built-in unit (attached to the wall) and we will be drilling 2" holes through each shelf for the cables. We will also be installing conduits through 9" of drywall to the amps which are stored in a seperate space underneath that has 2 cooling fans built-in.

From the looks of it, we will only be able to create two paths for the cables. My initial thought was to run power through one, and everything else (IC's, video, speakers) through the other. Is that the best solution to minimize interference? Also, how far appart should both paths be?

Also, we need to purchase 10' power cables for the amps (the 6' ones don't reach), and to keep costs down, we were going to use some kind of generic cable. The amps are two 200W stereo units and a 200W 3-channel unit (Anthem MCA's). What types of specs should we be looking for in a good quality generic power cable from a hardware store?