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I would try and get a job in Europe and then ski with people better than you. (I did a season in Tignes and ended up skiing with guys going for their 4 or who had it.).
Then get on a BASI 2 course at the end of the season. the BASI 2 is probably the best value for money course they run as it's two weeks and about £500.
After that you can apply for jobs in Oz, which you should easily get and pay well. If you still want to continue instructing, apply to Canadian resorts and you can go BASI 2- CSIA 3. My friend did that in Whis this season. Bear in mind that the CSIA teaching is pretty different to the BASI teaching, they focus on different things.
I feel I spent less doing my BASI 1+ 2 and my Tignes season (all living costs and a nice appartment in Tignes for over 5 months) plus my traveling to OZ than a gap course costs.