For the cheaper route, I was recommended https://soundqubed.com/product/q1-2200-2-amplifier/
A pair of these. Or I could go with the SSA IC2000.1 and strap two of those together?
And with the two amps, I can run the two batteries, big 3, 270A alt, 100% true OFC 0 gauge etc. and I should be good to go? Also might add sound deadening to the doors at least as well