You are more than welcome!
Honestly, what we are talking about is performance issues of the vehicle. As far as legality is concerned the DOT is concerned about tail lights, tires, chains, and that sort of thing. As far as safety that is dependent on you my friend.
I once saw a F450 pulling a mid sized fifth wheel. He was well under every weight on his truck...however he was weaving in and out of traffic like the Fast and the Furious... He was a hazard on the road.
You MAY run into performance issues with the truck, mostly the rear end is my major concern because of the weight bearing down on it. You will be well under the max trailer weight so the motor and the transmission will not care.
You really will not know until you pull.
Oh, don't forget towing mirrors if your truck doesn't have them. Those make towing easier.
Thanks!
Jeremiah