I respect your enthusiasm and your willingness to graduate in under 4 years BUT I would not recommend taking that heavy of a course load your freshman year. It may seem easy on paper when scheduling your classes but you have to understand that college level courses require a lot more time studying outside the classroom compared to high school. I believe the rule of thumb is that for every hour you spend in class you need 3 hours of studying. Of course this will vary depending upon how difficult you find the material but the point is that you don't want to over do it your freshman year. You have to get use to the rigor and demands of being in college and you don't want to burn out your first semester. In addition, part of the college experience is the social and networking opportunities. You don't want to shortchange your experience because you were in your dorm room or library all the time.
On the other hand there have been individuals who could pull it off so I think you should get a second and third opinion then make a decision.