My new mastercraft will be delivered soon with 6 of the standard JL cockpit speakers, and 4 JL M770-ETXv2 cans on the tower. The boat will have 3 MHD 600/4 amps to power those speakers, with 2 channels off one of the amps to power the factory sub. I will be adding two JL 12w6 subs and a HD1200/1. So question is, how should I have them powered? MC provides their boats with 2 batteries, I had a similar setup in my previous boat and only added a Kinetik HC 800 before the sub amp. Previous setup was with JL slash amps and never had any power issues. How power hungry are the HD amps? Will I need additional batteries? Whats the recommended power setup for this sort of system?