Yes, things are pretty quiet at the moment
I think Ballarat (ST) are not looking for people right now, though it wouldn't hurt to say hi and send your details.
Don't know about Mangalore (MFT) but the same applies, and they do look for people regularly.
The advice about schools training "international" students sounds sensible. I know some local (university) schools push people towards instructing and so have huge numbers of potentials that they will favor over people from outside. If you're prepared to move, there's a big school outside of Perth that regularly advertises - send your details - and expect to (and say) that you'll stay there for a decent period.
International students are a mixed bag: often their language skills are very poor, which makes it very difficult for them and you, but they are usually diligent and smart, and do well by the end of their course. Treat them politely and keep their likely comprehension in mind, and both you and they will do fine.
Also, for local schools, an RAA instructor certificate (or whatever they call it) would likely be looked on well. If you did some RAA time for your license, be sure to mention it.