The Mt Cotton courses are very good. It's a great track. I've done one there. They usually cost around $300 and the one I did had a Thursday night classroom segment followed by an all-day Saturday session. It's probably the closest to you. I know there are some in Sydney. There is one out at Warwick and another at Willowbank, but they are both track days which aren't much help with your roadcraft.
Smart move doing a course.
Maybe OzSTOC will eventually be big enough to run our own, or employ the HART team for a day somewhere. I know the HART guys would love to do it, and their courses are more affordable. I've done three with them when they were running them for the Gold Coast City Council. One of them rode an ST1300.
Welcome to the club- you'll need a shirt, of course- checkout the Shop on the Forum. Get your work calendar out and mark in the OzSTOC events that occur on your 1 in 3 (or is it 1 in 4?) There are Sunday rides, as well as Saturday (sports day) and then there are the over-nighters.