As far a mounting your hitch, you pin center can be upto 2" fwd (not aft) of axle centerline. Also, alot depends on the type of pin box you have.
I have to agree with Wingnut. be very careful with the TV mentioned. Most trucks will git it moving but stopping it is a whole different ball game.
I'd seriously consider a slider unit under your hitch with the shortbed, otherwise you will have to pay very close attention to turning very sharp turns (as in maneuvering the rig into sone narrow backin site. Even some tight pull thru's can be a real challenge.)
Travel safe & enjoy your journeys!
Mike & Sheila + Toppi
'13 CC 36CKTS, MorRyde IS, Kodiak Disc Brakes
'13 F350 Lariat CC 4x2 DRW, Curt Q20, BlueOx Bedsaver
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