I'll go with you have about 650-750 lbs for hitch wt. You also will probably NOT have a minor amount of people weight at 500 lbs! my X and I were 400 lbs, add in 4 adult sized kids, my family of 6 was over 1200 lbs! Your rig would be at GVWR before loading the HW of the trailer. so reality for me, is you rig has NO trailer towing capacity.
BUT, you can probably do 5000 to maybe 6000 lbs.....maybe.......I towed a 6500 maxed out trailer with a SW GM 3500 back in the 90's. I had 2400 lbs of payload per the GVWR less tare wt. I was usually 300-500 over the gvwr of 9200 lbs, NEVER over the axel wt ratings! I went on my merry way with my family. Not sure I would do that with your rig tho!
a 25 series 8 lug rig would be better for a what could be a larger family weight wise!
Marty
