I am friends with a bunch of the MedSci kids and they are really awesome! Of course some of them are complete geeks and nerds, but you will get those sorts of people regardless of the degree/course; the ones I am friends with go out far more than I do and achieve results either better or worse than I (they are in Medicine already essentially and only need to maintain a GPA of 5.00).
I hope you have a good shot at getting in. I have another friend on the same ATAR hoping for the same course. Did you apply through both QTAC and UAC?