ditch the leaf springs in the front and bag it.
can get an 05 axle housing, radius arms, frame brackets, trackbar and spring buckets, then just gotta get bags build a bracket to go from the bags to the spring bucket, ride valve some solinoids and switches.
on the back do you have the electronic hieght setup or the single ride valve? if you have the single valve you can just add some solinoids in and have switches in the cab to adjust hieght. its nice like that too so you dont have to jack the trailer up and down, just drop the foot, drop the air and drive out. and just that backwards to hitch up.