While you could take time to read up on the ins and outs of trusts setup in New Zealand and Cook Islands as well to keep it regional and also explore Liechtenstein setups, speak with an Australian lawyer before actually proceeding (assuming you live in Australia). An incorrectly setup trust is worthless and crumbles in questioned in court.
If you have sufficient with money you will choose Luxembourg that's what I would do, after that I would setup something in Cyprus or Malta which both will work very well.