I then plan to get an instructor job at my local airport (Jandakot) and accumulate some hours in exchange for more money that I can put into various endorsements.
Be aware that it is incredibly competitive to even get an instructor job and there are truckloads of unemployed instructors all trying to get a job at Jandakot as well. There are instructors at Jandakot with a lifetime of experience being made redundant at the moment. Another point to consider is the money instructors make alot of the time is less than minimum wage so going from a doctors wage to less than minimum wage would no doubt be uncomfortable.
I personally think (as someone who has gone through a career change to pilot) that ditching medicine for flying is an absurd prospect. I think if you seriously want to do it, some sort of flying yourself around the outback to service communities as a doctor would be the smartest thing to do. Good luck with whatever you do!