I wouldn't recommend the U Can Do either. Not because of your ability to fly it, but rather because of the plane itself. The U Can Do's have a history of having tender landing gear and fuselage that don't stand up to rough landings at all. Unless you can "grease" in landings on your trainer I wouldn't recommend moving up quite yet. If you're still "arriving" instead of landing you may have problems with damaging the U Can Do. Trainers are designed to take rough landings like that.

Hope this helps

Ken