don't forget the weight of the dolly. you could save the dolly weight if the car could be flat towed. and then remember that your max towing weight is not 5K, that's the max weight the hitch can handle. but if your MH's actual rolling weight (actual combined weight of the load on each axle) is more than the combined axle weight ratings you need to deduct a pound for every pound you're overweight.
in general, the maximum amount of weight you can safely tow will be the lesser of the following:
- the GCWR (gross combination weight rating) of the MH minus the actual weight of the MH as it is loaded for travel (includes fuel, fresh water, food, clothing, people, pets, supplies, etc.) actual weight = the combined weight on the axles.
- the weight rating of your tow bar
- the weight rating of your hitch
good luck.