Get axel weights when you are road ready with all your gear. Inflate tires to the manufactures recommended pressure, not what the FR sticker says.
I think Ford started to use larger sway bars. The front should be 1 3/8 inch diameter and the rear 1 5/8 inch diameter. If they are smaller at least consider installing the poly bushings in place of the rubber ones. Or Get over to Leaf Springs, Helper Springs and Suspension Parts | SD Truck Springs
and consider replacing the sway bars. If you are a amateur wrench turner you can DYI.
Take the rig to someone who understands MH alignments, not a Ford dealer, and tell them your concerns. +5 on the castor. If you browse the forum you can find some post about alignment including one that has the specs that work.
Replace the shocks to anything other than the OEM's.
I did this to my 2860 and was the best thing for me. Never considered the steer stabilizer, I think they mask problems.