1. Healthcare is a big issue. Firstly the ability to get cover once you are over a certain age and secondly the cost if you can get cover.
2. Be aware that the Australian Working Life Residency rules were changed a few years ago. This may affect you. http://www.aph.gov.au/About_Parliament/Parliamentary_Departments/Parliamentary_Library/pubs/rp/BudgetReview201213/ResidencyPortability