Consider looking into the Med Sci (Adv) or Sci (Adv) @ UWS, or Med Sci @ UNSW since they offer lateral entry into their undergraduate medical program (you want to maximise your chances).
TBH I think Sci(Adv) and Med Sci offers similar, if not the same, career opportunities. Basically the majors on offer are the same, except in Medical Science you are restricted to Medical Science Majors (Pharmacology, Pathology, or Anatomy etc). Unless your looking at a mathematics, psychology, or geology majors (which are typically offered in a Sci Adv degree and have better career opportunities) you may want to consider doing a Medical Science degree since they offer you a taste of all the medicine subjects and you can gauge if you want to do medicine from there or not. This information is for UNSW btw.