4" going to 5" - UCA's??

Hey all, I'm currently running the RE 6030 3.5" SF kit sitting at an even 4" all around. I'm thinking of going to 5" via boomerang shackle and spacer. Should I be considering UCA's to help w/ front pinion angle and handling issues? It is a DD and trail rig, so ride comfort is a consideration.

I'm also swapping in an LP front 44 (no flames please), so I'm thinking adj. UCA's may be required for the extra inch.

Any inputs are appreciated.

if you use the RE drop brackets you may not need new control arms; however, i would recommend it. the best bet would probably be to get new upper control arms.

brandon