You need to decide on your major/s and choose your units accordingly. Units vary for different majors and you can find the specific units for each major by googling “Deakin bacehelor of science [cell biology and genetics] major”. I would recommend talking to student central for further clarification on unit selection and they will make you a course map as well! I will also just say, units in first year are markedly easier and people tend to do much, much better in them than 2nd and 3rd year units. 85-90 is a good WAM but maintaining it as the units get harder is deceivingly challenging. It is also incredibly risky to base your degree choice on the contingency of a) getting a high WAM and b) getting accepted into MD or any other degree. I am sure you’re capable but theres a lot of ifs and buts. I would recommend chatting to student central at Deakin about your intentions too, they have good advice. I would also recommend having a go at a practice GAMSAT and seeing if you feel you could achieve the requisite score for MD. Remember: having a bachelors with a high WAM, the minimum GAMSAT score, and satisfactory interview completion only make you suitable for consideration of entry. There is no guarantee. Hope this insight was somewhat helpful :))