Redeeming things: Trailer is a tripe axle, which tend to have lighter pin weights.
Negative things: 17" wheels and tires, the unwanted step child of truck tires in modern times.
Tow it once and see if you want to spend money to upgrade suspension, wheels and tires, or invest in a new truck. Tranny will be on the list also. The 48RE can be rebuilt to be strong, just another 4-6K. If it was me, I would look for a 2015-16 SRW Aisin tranny 3500 ram. You get a 7K rear axle rating, exhaust brake and lots of power to tow the trailer. I towed a 39'+ 16k fifth wheel with a 2015 SRW 3500 4x4 and it did great.