Generally, your limiting factor is PAYLOAD. The yellow border tire placard on the driver door latch pillar is the actual Payload for YOYR van as it left the factory. Forget about the generic charts. Read their footnotes, and you will see why I say that.
The maximum weight of all passengers and cargo shall not exceed XXXX lbs speaks for itself.
Find that placard. From your payload, subtract the weight of all passengers, car seats, tools, snacks and cargo you plan to carry. Subtract 80# for a WD hitch. What remains is the most tongue wt you can carry.
You MUST have at least 10% of the loaded trailer weight carried on the tongue or expect excessive sway. 12% is a better target. Assuming 12.5% tongue wt, multiply max tongue wt from above by 8 to the the heaviest GVWR trailer you can handle. Assuming 10% tongue wt, multiply by 10 to get the absolute max TT GVWR possible for your rig. NOTE Use GVWR, not dry wt. Nobody camps in an empty trailer. If you do not load it to the max, you have a safety margin.
