Battery and cable layout

[BuddyP]

Well I never persued this area but am about to again. Looks like several different options to choose from, not familiar at all with what size fuses to use and such. Still not sure how to route and setup this thing. I thought the shut off switch would be in line to shut everything down, but by the schematic above it only shuts off the fuse box??

I have the ford style solenoid. I'll get some 1/0 wire.