If you want to be part of the industry then I'd recommend you do your Pre-Apprenticeship course and go hunting for an apprenticeship. That doesn't mean just looking at seek.com every week, that means going door knocking too. Whatever it takes to get on the path to your Cert IV. Once your an AME it's very easy to move around. Once your a LAME, not so much without starting again.
If at all possible, I'd avoid Aviation Australia. No doubt they can get you qualified, but they can and do charge whatever they like for the service. There are other organisations that can do the same, they're just not as 'mainstream media' as AA.
They recently quoted a friend $2000.00 to look at an overseas qualification. no outcome with that, just $2K to have a look.
Another firm in another state offered advice on the same quals for free. Took 20 minutes.