The upper control arm is unnecessary. Do a search on this forum (or Planet Isuzoo) on ball joint flip and that should correct any camber issues you may have.

The Independent4x kit is great but if i were to do it again, i would rather piece everything together myself. The Indy4x stuff is on the pricy side. Add-a-leafs and 6" long shackles (or make your own)... thats it. If you want more goodies you can get shocks, shackle bushings, diff brake line extension, etc.