There is really no training capability in Darwin - the flying school is very small, has one VFR only C172 and when you ring them they rarely answer the phone (you usually get a tinny computerised answering service!).
If they are there, you will be lucky to speak with the one junior grade three instructor that is there, because the CFI (and only instructor there with any experience at all) will tear off at the drop of a hat to fly something with two engines at the charter company he usually works for and the students take second priority...