Good for you mate you'll have a great time. Ive been twice to Australia.

The first time i stopped in Brisbane for 5 weeks where i stayed with my brother and i went to Sydney for 1 week.
And the 2nd time i went for 8 months travelling all around the landmarks and cities and also met my g/f out there and we now live together and are very happy.

Lets us know how you get on.