See: http://www.wolframalpha.com/input/?i=aud+to+usd
Re: the property bubble. House prices in Australia are high compared to historical levels. However, as this article from Crikey describes, Australian wages have risen too. While median house prices are still at a higher level compared to median wages (see: http://economics.hia.com.au/media/House%20price%20to%20incom...), they have been soft and in some cases reducing this year. They haven't 'burst' in the way the US housing bubble did.
The differences between Australia and the US where you had a massive house bubble are numerous.
* Australian banks are more heavily regulated and haven't lent 'sub-prime' mortgages.
* Australian housing market has good fundamentals - our population growth has been quite high (due to overseas migration, like yourself!), and in most areas there is an undersupply of housing (with exceptions like the gold coast).
I think you are overplaying the negatives in Australia, in general everything is working quite well as this convincing piece from Crikey shows.