American with Australian Citizenship at University of Melbourne?

<p>I have lived in the USA my whole life, but my father was raised in Australia so I have citizenship there. I would like to attend University of Melbourne to study medicine once I graduate high school in 2016.My GPA is about a 3.6 (Out of 4.0), but will hopefully be about a 3.8 by graduation. I'm a cheerleader, a member of the speech and debate team, and am starting to volunteer regularly (About every week or two) at a retirement home. Also I go to a private school and will take 6 AP classes and maybe 3 honors before I graduate. Do I have a chance at getting in to University of Melbourne? Also, what would my GPA be on the Australian Scale, and what is the average that gets accepted?</p>