Definitely register for the event. There really is not a better place and group to get your feet wet with on the trail. After you get used to the traction Moab offers your truck would be fine on Hells Revenge or pretty much anything easier than that.
If yours is not equipped with the rock sliders that would probably be another good upgrade to do right away.
Speski OffRoad LTD, Cargo Solutions for Toyota 4x4's http://www.SpeskiOffRoad.com
"80 series, with a fridge"
1976 FJ40, Project with little progress.
2004 Starcraft 10RT