If you feel that you're ATAR is gonna be weak relative for medicine (<99) i recommend trying to aim for 95+ and grind for UCAT, focusing on the VR section, in addition to this start volunteering and try to participate in activities which you feel will cultivate youre leadership and figure out why YOU want to do medicine (outside of parental pressures), this is important for your interview.
To get an interview you need to get 93-94+ percentile for the UCAT for JMP and for WSU you need to get a good percentile as well however you will also need a good VR score, hence why you should focus on it.
With that all being said you should apply for JMP (a joint medical program between university of newcastle and New England) and WSU for medicine (especially if you're GWS). The reason for all the extra curricular activities i mentioned previously is that JMP and WSU both highly weigh the interview for the place offer (100% and 75% respectively) and the extra-curricular activities can be drawn upon to demonstrate your personal qualities.
Hence you shouldnt give up hope if you feel that your ATAR is too weak because you cant remedy this with good performances in other criteria.
Edit: forgot to mention that these unis use ATAR threasholds as in you just need to meet them an you will be fine and they dont weight them for interview or place offer, im not 100% sure of the requirements for these two but i think 95+ ATAR should be fine (maybe a bit more)