Yes, your axles are 7,000 lbs rated. I don't know what your pin height should be, but whatever it is at, you should end up with about 6 inches clearance between the bed rails and the bottom of the trailer to allow for movement of the trailer so you don't crush the truck's bed rails. If you are going for disk brakes, why not do the MORryde IS too? and when it is installed, they will make sure your rig is level by adding spacers to the frame where the suspension is installed. She will only need to work a little more O/T to cover all that