I would look at a matching 4ch. but thats me i like everything to match. As for the power wire...yes go up to a 4g and then distro off to each amp. The other thing i would look at, and not sure if you'd be interested but selling the amp you have now on the sub and buying a 5ch. amp it would make for a nice clean install and for how much power you want it would work out great! MTX has one A RFL805, JL has one, can't remeber the model number, but it's in their HD line. And i'm sure a few other companies have them, Ayduison does also i think.
|