I bet those kings are nice! I am running bilstein 5100s on my 06 fx4 set an 2" up front, 35x12.50 KM2s on stock wheels. No rubbing, works great, but only have about 2" of down travel up front from ride height. I may modify them to lower the front and inch if I don't lift the truck. I may also go with the 285/75/18 toyos if I don't lift it, since I do get a little walking with the 12.5" tires, though surprisingly little. The brakes still work great.
I did re-gear to 4.56 gears from the stock 3.73s. Huge improvement, no regrets with the gears. I also ran a Detroit locker out back, Eaton E-locker up front. I would also like to run camburg upper control arms but as you know, you need wheels with 4.5" BS.
Lets see the truck how it sits now!
If you don't have a programmer for the truck yet, do it! I am using an older SCT Xcal 2, tuned by VMP tuning. No more throttle lag, much firmer/faster shifts, and a fair amount of extra power.
2012 Jeep Rubicon Unlimited Six Speed - AEV 3.5", 35" KM2s on Argent Pintlers, Syergy steering upgrades, Ursa Minor J30 pop-up