I agree with what most have said except for the "go out and get a 3/4 ton" position. Your truck with pull the trailer just fine. The fact that it is a half ton will limit you to what you can take along. My numbers are quite similar to yours. I am going down the road at about 6400 and when the WD bars are in place my tongue weight is around 850.
We travel relatively light when considering what I put in the truck so, even though we are close to the payload limit, we are comfortable. When you hear people tell you that you really need to get a bigger truck, or get a big truck with a diesel, they are coming at things from their prospective. Full timers have a need to bring more stuff than a weekender so it makes perfect sense for them to go big. Some have a few kids and a dog with all the extra stuff that that would entail. No so in our case.
We have been out for a month at a time a few times. We put the gear and the food in the trailer and the bikes on the back. We sit in the seats and have a generator in the back along with a rug and some extra leveling blocks in the bed. Sometimes we also bring along some firewood, but not much.
If you have towed your trailer with your previous truck, you will be fine with the new one. You know what you are getting into.