A trailer tongue weight should be 8-12% of the whole weight to tow properly and safely. I was a trailer engineer for 5 years. Our biggest challenge was to get the tongue weight right, and it is up to teh user to have the adequate hitch for it.

Your camper appears to be light-fronted, meaning the axles are too far forward. The manufacture probably did that on purpose so CUV's can tow it with their small hitches.

If you own a set, or have a friend who has some wheel scales for racing, run that loaded camper onto the scales and see what teh numbers are. Have one under the tongue coupler too. Just a guess, but I'd think each of the 4 wheels would be like 1200 pounds, and the coupler should be around 430 to 520 lbs. If not, repack/load the trailer to get that, and I'd bet it'll tow like a dream!