theres a 2nd battery fitted already in the rear pickup bed that runs 99% of the non factory kit, flashy lights, comms, tablet, phone charger etc done this way as it leaves the main vehicle battery free only things that run from this are the 2 winches and there never used unless the engine is running. Also it was just easier to run a fixed feed from battery 2 into the cab and run everything through a marine grade distrobution block and fuse holder
a 1000w inverter would be nice but I think for me a bit higher than I need but when I come to paying out for that ill get the biggest I can do, solar panel would be really nice to keep the 2nd battery topped up but think the split charger should do a decent job of that as I dont really leave it running stuff for too long at a time the most its going to have to do is run the comms kit and keep the cool box running now and then but its an option I am going to account for so that if I do decide to go for it then I have the stuff fitted ready and its good to go.
Im in the process of replacing the 3 gauges that are fitted to a pod ontop of my dash as I dont use them they currently are compass tilt meter and volt meter, im thinking of fitting 2 digital volt meters one for main battery and one for the 2nd battery so I can see what each is doing
Got a few ideas in the mix infact one of my last jobs last time I worked on truck was to mount the body for my Yaesu 350 behind the rear seats