if you want to build your IFS a little, check out Downey's website. I beleive they've got some HD torsion bars and arms for IFS.
Honestly, the stock system is pretty stout. I've got a pro comp stage 2 lift as well, and a lockrite locker in the front. To cheaply wheel an IFS well, I'd just carry some spare axles (just in case) and throw in an aussie locker.
you won't notice the locker in 2wd, so it'd be good for on road, and offroad, you'll enjoy it.
