I'm of the opposite opinion, ran 4.10 on 37" ko2's for a year before regearing to 5.13 and I feel like the money would have been better spent elsewhere. I'm in a 2 door though.
I used these, worked great.
https://www.morimotohid.com/morimoto-hd-load-resistor-for-led-bulbs?quantity=1&srsltid=AfmBOooBFqG0bf9Q1s6TF_LHY0b3pa0MMe7_9Geqax7q576U9TfksJIr
I bought and installed cheap Amazon inner fenders. They fit, but it was a lot of bending, prying, and drilling. I recommend getting something quality and made in America.
I like my LOD sliders and bumpers although the finish isn't holding up great after a couple years. I would not have been happy with the sent right out of the box.
Snatch rings don't really double pulling power, it's closer to 1.7x due to friction. 8k is plenty, I just carry an extra winch line and two snatch rings just in case.
My son has an android head unit in his Cherokee and it works well, all the factory controls still work through the radio. Not sure about charge scheduling on 4xe.