+1 for the Aurora Australis Tasmania Facebook Group (if you're on Facebook of course). If an aurora is able to be seen from Victoria, then this group will be going bananas.
I also check out
www.spaceweather.com on a daily basis. If there is any expected activity then it will be mentioned on here. It is also a great site for linking to all the useful charts and information.
A good place to view not too far from the city is Flinders. All you need is a clear view to the south, and even better with the flat horizon over the water.
I'm also in Melbourne, and have yet to see one (after about a year and a half). Good luck, and I may see you out there!!