ATPL
If you have done all your traing in AUS and completed the ATPL exams, unless you have quite a bit of jet time up your sleeve your going to have to do the JAA ATPL's which take 6 months at least.
Are you planning on meeting all the requirements for the AUS ATPL apart from the age? eg 1500 hour mark ?
Because if not you will really just have a AUS CPL with the ATPL theory exams completed.