Lol... i grew up in aus for 12 years. Partially did my high school and completed tafe and uni there. But I decided to return to Asia for work life & start my family.
Having seen the culture there, your kids will grow up sheltered and less ambitious than the fresh off the boat asian kid with nothing. Sometimes struggle is good to build character and proper study & work ethics.
Maybe it is just me, but I definitely identify with Asian culture more and have no regrets now that I have moved to singapore. Funnily enough, I work closely with aussies and they are all desperate for projects that they are looking outside of their local markets. It's funny..and sad at the same time.
Anyways, my advice is dont think of buying property in current economic climate in australia. It is an absolute travesty with what is happening with the property bubble. The recent interest rates cut by the rba, the lowest it has ever been is still not good enough to stem the bleeding. There will be a correction and I advise you not to be a part of it. What goes up quickly must come down even harder.
Rental rates are dropping, so the market is strong for rent. You can get good rates on inner city apartments, which has spouted out alot in the past 5 years. Save your money and invest in other things instead of prop. If you own property, consider selling out now whilst it is still high and not when the crash begins. Best of luck.
By chance, I had the opportunity to speak to someone who lived for many years in the UK but eventually returned for some reasons many people who wanted to migrate but didn't anticipate or see it. Also another one from Oz recently.