Have you considered applying for an Undergraduate position, and going in as someone with a qualification? It means a Uni degree and it's an extra few years before you get there, true, but you get paid while you study, your HECS funded and all insurance benefits.
Just my 2c
Your aptitute testing will give you a list of jobs you qualify to be able to apply for. There's litterally a list, and if you're not going in with a clear idea of what you're applying for a recruiter sits you down and discusses your options, chances and what you should focus on.
As Steve0 said, you are just a number, but if you're an enthusiastic number who's willing to take the initiative then you'll be a step ahead.
Alot of cadets want to go to RAINF and "lead men into battle"and win themselves a VC