Yeah its a 1500 watt inverter but the truck won't even quite run it that hard so even 14 is overkill honestly. Having AC lines all over the truck scares me but a double jacket should be fairly safe. Just getting it out of the cab is a little tricky. But then I have a setup in the truck and can keep batteries in the tool box in the bed which is ideal imo.Sounds like you have a pretty good understanding and start to it. I've seen people run ridiculously large gauge wire for it like they had a 100A circuit they were putting in. Just didn't want to see another super overkill setup for no reason.
Sit, Ubu, sit.