Hi Weathergirly,
I am planning to do the license conversion in Perth as well. Was planning to go with AFT and sent them an email as I am currently overseas but didn't hear a peep from them. Heard Rob Avery's study guide is not quite updated. Ad Astral have an IREX course but not sure about the rest. If the costs for ground courses at a flying school is not much more than a self study course, then I'd rather do that.
When do you plan on taking the exams? I might do it in June. Keep in touch!