Hi Alicia,
Try looking at seek.com.au for jobs, most hospitals and recruitment agencies list their vacancies on there. I'm living in Melbourne at the moment and there's normally a paediatric job or two that pop up but not as often as say MSK private practice or elderly rehab in nursing homes.
The Australian exams do seem to be very MSK orientated and can ask very specific quetsions (e/g/ in neuro -what is item 4 on the mAS outcome measure). The exams don't take into account areas of special interest, they are an assessment to make sure someone is at the level of an Australian new grad so you would have to revise everything.
Hope this helps.