Went with 285/70/17. Had a little issue with rubbing but fixed it by hammering down the pinch welds and trimming some plastic. Ive loved my KO2s, going on the 2nd set and still no issues.
I though the same at first, I went with above head switch panel. Wiring isnt as bad as you think!
Agreed, only took me about 30 minutes or so to get everything in and wired.
I was debating on doing something like this but decided against it for the time being (I dont have to power a fridge, yet). I added a volt meter/aux usb charger to my over head switch panel, been more useful for me so far.