To keep things short, you have nothing to worry about. That truck could haul a lot more then the trailer you have.
If you reading the right sticker, means you have 3050pds of payload. The trailer is 6400 pds, let's add 1500 for gear so 7900 pds. Gives you a hitch weight of around 1125pds or so. You subtract that from your 3050pds of payload and what you have left is what you can legally put in/on the truck. 200pd hitch, 50pds of running boards, gas, people and so on.
Loads of room, you most likly will not know your towing anything at all,