G'day mate ,
Call air Wilpena(rawnsley park)
Darwin is a good spot but if I were you I'd rather go remote with your hours
Horn island could be a goer aswell if u can't find anything in Darwin/Broome
Also there is an operator our of burketown who would also give you a go if you fit their minimum requirements
Do take your car mate so that you have the flexibility as remote places don't have taxi services at all
Lastly " good luck mate " get amongst it and whatever you do put your life and safety first before the flight hours on the logbook, once you start flying , those hours will never stop accumulating
Oz