JMHO: I'd say that the U Haul assessment is correct , the weight of the trailer with the SUV loaded would most likely, put you over your hitch limits.
A dolly will save 1,000 lbs+ in weight and drop the tongue weight considerably.
Next step will be to find the owners manual, for your SUV and check on dolly towing . Being Front Wheel Drive , it should be , but it would be nice to be positive .