excellent info. I love that you adopted "Cherry Bomb"!

I thought you may have some suspension issues when the 400 lb weight gain was mentioned. I would look into what coil springs are used for factory 6.4 HEMI's. Not to put pick up truck springs on your Jeep, but to find out what the "spring rate" is. Thats a great way to have the right spring rate for your current weight.

Then maybe have custom springs made. Or if an aftermarket maker can certify that their springs are the same "rate". All the AEV stuff on your truck also is heavy. That bumper is 80 lbs without a winch, so your front end is like 600lbs heavier than a stock Jeep. (if you have steel cable in the winch)

I would research what springs will truly be prepared for that kind of weight. I would also consider AEV springs as they have to work with the HEMI's weight for the cost of that AEV conversion. They probably know the pitfalls of weak spring rate with that monster motor.