In my old car stereo I first had one 4-channel amp using an 8g amp kit. Later I added a 10" sub and simply another 8g cable isntead of a single 4g. Just found it easier this way and research told me it would work fine, as it did. I'm gonna be buying a used 240sx or Maxima in the coming weeks and I was wondering what size cable to start off with. I want to go much further quality-wise this time using Focal components, RF amps, 2 12"ers, and an Alpine HU with at least 3 4-volt preouts. Will 4AWG be enough or should I go bigger?