Its a 28 foot camper. Not real heavy but u know its there.

 

When you lower the truck, you'll need to do something custom for the 5th wheel hitch, or have the trailer modified. Also, that 28 footer is going to have a fairly heavy tongue weight. You'll want some good air bags on the rear of the truck, helper bags may not be enough.

If your suspension bottoms out while towing that trailer, some expensive parts are going to bend and/or break.