Honestly, your best bet would be to hold off on the lift until you get some full spring packs or build some bastard packs. When I ordered my 4.5 from RC they had to back order the full packs. I needed the jeep drivable sooner, so I had them send me AAL's in the mean time. They sagged before I ever drove the jeep. By the time I got to Denver (from CT) with two people and 500lbs In the jeep, it was sittting at stock height in the back, and it didnt really recover once the weight was gone. My experience with AAL's was terrible, and Ill never use them again, there are many other people who will say the same on here.
That being said, you might do a little better with some overload springs, but I would say spend a few bucks and get the full springs. Its not a job thats worth doing twice.
Lightfoot