I would seriously consider the rear slide bed. They might seem attractive from a length to tow perspective but climbing over each other or having no floor space next to the bed gets old quick. There are PLENTY of TT's that are 32' or less that have dry weights between 5000 and 5500 lbs. I would look for one with the traditional queen up front and rear beds(does not need to be a bunk house). Look at Keystone Passports, Rockwood Signature Ultralights, Keystone Cougars and Outbacks etc. Tons and tons of TT's to google out there. We towed and 29' 5000lb dry Keystone PAssport TT with a Ford Expedition with no problems and that is a shorter wheelbase then the Suburban. Get a Equalizer 4 point hitch and you will be fine with the above length and weights.