You would probably end up overloaded on the rear axle. Just because it is within the total towing limit doesn't mean that the pin weight is good on that truck.
As for license (note that I live about as far from Canada as you can get and stay dry) I know that members of the Titanium Owner's Forum (Titaniums were made in Canada) who live in BC have to get the upgraded license in order to get insurance. Not sure about the other Provinces. At least in BC, it is not a difficult test. It might become a problem if somebody else hits you and the police have to do a report.