I think most poeple on here were are private patients. I don't think the sleeve surgery is on the public system. I remember reading an article a few years ago saying it had been pulled. But things could of changed again.
Generally, you need private health insurance for a year before surgery. I made my appointment with my surgeon about 3 or 4 months before my surgery date. I had to see a dietician, psychologist and do a bunch of tests before the surgery. This is why it took a while. BUt all surgeons are different, so try calling a few to see what why prefer and how long there wait list is.
