I'm not going to flame you.....However, I would start by saying you should adjust your lower control arms in until your pinion angle is straight, they're out way too far. Put your angle finder on top of your knuckles and try to get between 0*-6* Neg degrees caster. Your pinion angle is more important than the caster.
If you have to shim the rear...Just make sure you buy steel shims like Rubicon Express. The aluminums are total shit and will leave you stranded for sure.