You've already limited your selection of 5th wheels pretty dramatically with the 1/2 ton truck. If your criteria for selecting the 1/2 ton included a nice, smooth ride when unloaded, it's a shame that you didn't consider the Ram 2500 with the rear coil springs and air suspension option. The higher capacity of this truck would have opened up your options to more 5th wheels than will be workable with the 1/2 ton Ram 1500.
As far as time and effort required for setup, it all depends on how your 5th wheel is equipped. I daresay setup on ours is pretty competitive with the MH when you consider that the MH owner has to unhitch his toad while I'm unhitching the 5th wheel from the truck. With automatic leveling, power cord reel, etc., leveling and hooking up utilities really isn't that different than the MH.
Rusty