Well a lot of that depends on your tires and future plans with your Jeep. Adjustable control arms and adj. track bars are gonna be crucial to get your axle back where it should be. BMB pads and centric premium rotors would be a minimum IMO. I have the Vanco 15" BBK with 33s and I definitely think the extra cost is worth it no questions asked. I'm assuming you have some kind of transfer case drop in place with your 3" lift, getting that out and a SYE and double cardan driveshaft would be pretty high on my list as well. You'll need at an absolute minimum the rear upper adj. control arms to set the SYE and driveshaft up properly but you'd be better far off with all 8 adj. control arms. Once you do all that you're well on your way to doing a tummy tuck.
Do you know what brand your shocks and springs are?