Battery relocation

I’m running a trunk mounted battery with a square back alternator and have it hooked up to the starter relay lug with a -4 feeding/ routed to the battery. With the voltage regulator wired like stock. The only -1 is from the battery to ford relay to starter. (And battery ground) On my car, I also have a -4/-6 feed wire each for electric fans, MSD, and main hot for painless wiring harness routed to the trunk, with inline fuses and hooked to the battery. Look up a wire load chart, this will tell you want wire size to use for a given load. You want to be averaging less than 75% load for giving wire size. As for a one wire Alt, I’d run it back to the battery with -2 as the charge wire is also the load sense wire...