Dougie, I'm with Dub, the Moab experience is well worth the trip out there even if it's just for the company. My first three years out in Moab I was stock height (with some taller tires) and as long as you take your time, pick the right line, and listen to your spotters you should come out just fine. I DID hit my Trooper skid plate once or twice, and the gas tank skid plate a couple of times, but nothing serious. That's what the skid plates are there for anyway.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless