The ball joint flip really is for giving your front articulation a little more drop.

Some folks have "leveled" the truck by torsion cranking only until truck is level, not nose-down stock, adjust headlights as they will be pointing up more. This may decrease rubbing, but not much.

Lifting will probably fix rubbing. Headlights may not have to be adjusted if you raise F/R equally. Longer coil springs will increase travel of rear articulation-especially when rear sway bar disconnected. Stiffer coil springs will ride nice and sporty, and increase your rear cargo loads from drooping the back of truck and ride nicer- tows better as well. Stock springs w/ spacers will lift, but keep stock travel- which is adequate.

Good Luck!