I was in Oz this summer & rented a Warrior from Airbourne Aviation (
http://www.airborne-aviation.com.au). I found them very friendly & eager to help.
I eventually got an endorsement from CASA that covered me for flying for a month. Note they are insistent on 2 hours instrument time logged, before they (CASA) will allow you to fly solo more than 20K away from the airport.
Camden is slightly further out of town than Bankstown (about 45min car trip from central Sydney). Camden like Bankstown is a GAAP airport & as such has its own style of approach.
Have fun.