Another way too vague of a question. Depending upon many factors, as noted, a SW rig with a 7-7.5k RA could handle a 17k 5w.
But if you say a family of 6 like I was with 4 teenage kids, family wieght of 1300 lbs, add in some other asst odds and ends in the bed, you may very well need a 35dw, or may find a class 6 lol pro crew cab to be the best option.
Reality, like ALL choices of TV's, we need to go by payload of the TV, know correct tare of TV, wts on axles vs capacity etc. What might be good for you, may be too light a gvw rig for myself with kids, or fine just for a couple no kids.
Marty