Have been looking for a bit larger TT, something with a rear living or rear entertainment, also, desperately need an 80" bed! Ruled out Outback TT's even though we really liked those, hitch weights...
I did a search and found several threads about F150's towing fifth wheels. Here is one. I have been considering trading the diesel in for a HD F150. Like I said considering, wife isn't to keen on the idea. Good luck, John