I recall your post last year. Please, please, please do not do ANYTHING, and certainly DO NOT get on a plane to Australia until you have consulted a good migration agent (Paul Hand, who just answered, is one).
If you do the wrong thing, like arriving on the wrong visa or applying for the wrong visa once you arrive, you could destroy your chances of ever being together. I know an agent costs money, but how much do you value your relationship? You can't afford to make a mistake as your whole future is at stake.