So the plan is to hit trails that more or less require 33s and 2 lockers? What about a locker in the rear and a LSD in the front?
Jimmy is right. Go for the Aussie. You'll never know it's there until you put it in 4wd. If you can swing it, get a selectable locker. Limited slip is not the same as a locker, and will not allow you to crawl the step obstacles sometimes, as only 1 on that axle is pulling until slip occurs, and by then (You're an engineer right?) all others are slipping, and it will engage the others to spin, and you never got a chance to easy does it and crawl.
As far as the trip, there is a lot of planning that has to go into it, and I'll be discussing with others (I'm certainly not in charge, but will help all I can) and making a plan. We discovered some neat stuff (more to come later) that will make our trip unique, comfortable, and memorable. A trip to Moab requires a large commitment. We'll start a new thread for the trip, after we get a plan together.
TJ, it would be great if you could go. I think you'll need 33's and lockers at minimum, and you'll get to see all the scenery, and by pass a few obstacles. We by passed a few too.