You are in luck, that weekend is a new moon weekend at "Wiruna" for the Astronomical Society of NSW. We have our dark site about 3hrs drive from Sydney.
If you make contact with them www.asnsw.com
I am sure someone can give you lift. It is BYO everything ie food, bedding, tent, wine etc, there is limited onsite accomodation if you dont have a tent (but you will still need a sleeping bag, $50 from Kmart), and the society will work things out with you if you wish. We usually get 30-40 up there, maybe less this time because of the eclipse.
Dont worry about astro equipment, there is plenty to go around up there.