D30/arb
Hi! I had the same dilemma with my '97 TJ. I ended up replacing the low pinion D30 with a high pinion D30 from my son's wrecked XJ.
I trussed the housing and changed gearing to 4.56 with the ARB locker. I am running 33x13.50x15 Toyo Open Country M/T's.
I did not upgrade to the 30 spline after market axles due to running low on cash! (Gee...nobody else has been there!)
I have the Rock Krawler long arm system with around 4 to 5inches of lift depending on how I set it up.
I have had no trouble so far with this set up. My engine is a stock 4.0 and 3 speed (now dying!) auto.
This set up was done in 2008. In 2009 I drove this from Washington State to the Jeepers Jamboree, did the Rubicon Trail and drove back home. In 2010 our trip was to Nevada and Arizona, meeting friends and running trails all over each State.
We did a Moab trip and again, no problems.
A lot of this is common sense, don't use the throttle as the only answer and drive by "braille", meaning listen and feel your rig.
I am planning to upgrade from my D30 to a Currie product in the future, only because I am going with an engine swap in 2014.
You should be just fine!