2007 Pacific Coachworks Tango 256RKS (GVWR/Tongue Specs etc)

I suspect your loaded hitch weight will be around 800-850lbs, maybe a bit more. I would look for a truck that has the carrying capacity to carry at least that much hitch weight plus whatever else you are going to put in it.

Most of the modern 1500/150 series trucks would be just about right at their load limits but doable. Check the weight carrying/weight distributing rating on the trucks receiver also for some help.

Here is a way to weigh your tongue without going to a public scale.
Barney