Optimal power supply

Hi, I’m probably going to drive two DLS A6(on 2Ohm), as well as an Eton PA5402(on4Ohm) and an Audsion Lrx150.2(4Ohm)… are about 2.4kw rms…. I’m going to install a 120A Lima in the front and move a 50mm2 charging cable to the rear. There’s also a separation relay installed, so that the system only gets power from the batteries that are installed in the rear. I was thinking about two Exide X-treme with 70AH and 530A each…. Then I wanted to switch 6 Alfatec 1F Powercaps in parallel and install them. Or would it be more useful to switch 3 Exide X-treme with 50AH and 360A parallel and do without the powercaps?? Cable path from batteries to power amplifier max. 30cm Mfg Olaf