I'm not smart enough to guess but may have some useful "data"-

I was lucky enough to weigh my '50 two-ton on a certified scale at work a couple years back. It's a 179" wheelbase chassis with an Obeco 13' combination grain/cattle body and twin cylinder hoist. It weighed 7900 pounds complete.
I used a 14K GVW tag (bumper pull) tandem axle trailer and a single rear wheel (3/4 ton) Duramax to tow it 1100 miles with no problems. I had sway control and equalizers (spring bars) on the hitch which helped out. Would have preferred a gooseneck but this was what I had available.

Good luck and drive carefully !