A good option would have been to cover each at different semesters. That way you can decide which one you prefer after getting your feet wet on both. Sometimes you may think you like something and after you get knee deep, you realize you don't really like it as much.
An informed decision seems wise.
Welcome to CodeCall, yingyang! Do you have an outline of the course material? If you do, you can start by reading some of the material, so when its done in class, you catch on quickly. This will also give you a chance to ask questions on things you did not understand during your first read through.