Yeah my approach has been finish everything then go 4x4 so I know where I will be. Tony went through 5 sets of leafs I think during his build because of all the changes.
Good luck mucking with the rear bumperettes and sub frame! I unbolted it, (with a grinder) found some hidden welds, ground them out, found more welds, ground them out, almost lost both eyes to exploding cut-off discs, and eventually just torched the thing off as best I could. What a nightmare. The back looks way better without those things, and the offroad angles are way better too.