Like about every one has mentioned the payload will be eaten up quickly. A lot depends on your family size, and camping style. If you start doing longer trips, taking 2 cars may not be as appealing, an 6-8 hour drive with 2 cars means 2 drivers, it is nice to be able to swap drivers. I do about 80% of the driving, but it is nice when the wife drives for a bit on longer trips
I've got a payload of 1800lbs on my 1500HD, and it gets eaten up quickly. My TT's dry weight is 6300lbs, and loaded is 7500-8000lbs depending on is we carry water and what all we carry. Tongue weight is 1000-1100 lbs. 2 adults, 2 teens, a golden retriever, 4 mountain bikes, 4 kayaks, firewood, and a cooler, and that 1800lbs is used up.
Packing light you should be ok for the short trips, but it will be a much better towing experience with a 3/4 ton truck, My truck is about a 5/8 ton, and it does OK, but a 3/4 ton gasser is on my radar.
