i have the coil/shackle lift. upgraded brake lines are not needed with the shackle lift, probably with the AAL.
upgraded shocks are not needed, but if you go off-road at all, extended ones in the rear are very helpful. I think the stock shocks limit you in the rear as it is. as for the front, i dunno. there weren't any replacement shocks for the front when i put the new coils in, so they max out alot....
overall, i like the lift, but if i had to do it over again, i might just go with radflos and TC ucas in the front.