Sold my old rig and starting over -- Need advice!

Any newer well equipped 1/2 ton SUV will tow a decent size TT with ease. Problem solved except for the fuel mileage thing during commuting or soccer mom duties, but a minivan won't get much better mileage and you'd be hard pressed to make up the difference by having a 3rd vehicle.
Van, meh, I guess if you really want one. 4 kids in a crew cab pickup = I'd rather stay home than have a crumb muncher riding shotgun for 1000miles.