I would only council: no re-arching of leaf springs. I did that once, using a reputable spring house re-arching my stock springs to a 3" lift (oil bath, right temp and tempering, added leaf) and after two years, they were right down flat again.
Mine is a 2500, camper package 2G, so it was really a SRW, one-ton in disguise. After leaving the camper on a lot, it seems to have not lost its arch. Of course, I added another set of one-ton secondaries (helpers/overloads) to the upper pack, Stable Loads, and it seems just right for the load: i.e. just about the same height loaded as unloaded.
Choose the suspension you need based on it's simplicity. Complicated levers and U-bolts look like a caution to me.
jefe