I finally started my build last weekend, I gained a lot of good info off this thread so I wanted to share how I did mine.
Previously I ran 8ga wire to a rear Blue Sea fuse panel and installed 2x 12v outlet and 1 USB in the rear for my Fridge. The fuse panel also supplies power to rear lights and a water pump attached to a 13gallon Front runner tank.
You can see the 12v outlet on the driver side is vertical to not interfere with a future fridge slider.
Then I fabricated a ABS sheet that covers my battery and gives ample room to build off of.
Started as this:
Ended as this (still waiting on my second BUSSMANN relay block to arrive)
While this set up is way overbuilt I went this way because I wanted something I wouldn't grow out of and could handle a lot of amperage (up to 260a constant). I will be eventually adding dual batteries using a blue sea ACR. likely a group 31 Optima under the hood and a 34 Optima in the rear or dual Odyssey 34s under the hood. Currently I have a PAC 500 to isolate the winch, Pac 200 for accessory 12v. Blue sea 6 fuse block for constant lower amperage 12v like rock lights and under hood lights. The 4 breakers are for Bussmann 15303 1 (80a), Bussmann 15303 2 (80a), RF 500W Amp (80a) and rear Blue Sea fuse panel (50a). There is also a separate 180a relay for an ARB Twin Compressor, it's tied into the Bussmann 2 breaker for circuit protection.
I believe when all is said and done I'll still have 5 or so open relays and a bunch of fuses in the Bussmann Relay blocks if I ever need to expand.
Wired a pair of KC Cyclone lights to a under hood switch that also activates a voltmeter. Lights are held inlace by the bolts from my PSC hood louver.
Then I modified a Rugged Ridge A pillar mount to hold 5 switches and a 6th power switch that turns the lights on and off. The switch set up is a little complicated so I made a video.