First of all, get yourself a CPL initial medical. If that all goes well,, buy yourself a common trainer like a IFR C172. Find a school you feel fits you and pay for the instructors to teach you in your own aircraft. Get your PPL, do your night rating, do your instrument rating. Do some trips away over weekends and holidays touring around. You will end up over two years or so having the experience and exams for a CPL.
You should enjoy your day job better as you will look forward to the flying, you should also enjoy the flying as you don’t have the stress of funding.
You may have a ball, you might not. You will get to see the industry and Australia from a different perspective. You might also hate it as the career brochure you see now may not reflect the reality you experience. Flying is no different from your current industry, a lot of people who start off and get qualified do not end up working in industry.