You will seriously regret buying any tow vehicle that is rated for 5000 or less and then towing a TT.
For starters, keep in mind that everyone and all weight in the tow vehicle subtracts from what you can tow. The passengers, gear, and tongue weight of the trailer will put you over the vehicle payload very quickly.
Build a life you don't need a vacation from.
2016 Silverado 3500HD DRW D/A 4x4
2018 Keystone Cougar 26RBS
2006 Weekend Warrior FK1900