The truck's receiver will have two ratings: One with dead hitch weight and a second using weight distribution. Some Class V receivers may be able to handle the weight without the use of weight distribution, but you will want to watch how much you load up the rear axle so you do not go over your wheel capacity.
Ideally, you want to adjust your WDH for proper balance and then use your air bags to do any final leveling out.
Unhooking the torsion bars will apply the full tongue weight to the tow vehicle and also allow for better articulation over uneven ground. Some of the frame tongue issues have been traced back to overly tight WDH setups or using them while off-road. I feel the short distances at low speeds will allow you to safely unhook the bars even if it is over the receiver capacity, but others may have a differing view.
Once on sand, you may find it easier to off-load your toys and drive them rather than tow them to your camp spot.
