What HF said is spot on.
My suggestion would be to do some RA time as well, just enough to get the hang of it as the hours may not be of short term benefit depending on training choice and jobs applying for. All experience is of benefit in the long run.
The integrated courses can be good depending of the flight school, and ground school classes may suit some better but exactly the opposite is true of the non integrated courses so it's really about choosing a good school to fit the applicant. I did an integrated course and learnt a lot that of 'non technical skills ' that have helped me through the industry, basically just professionalism stuff.
Benny is correct regarding the military, with appropriate grades, commitment, and youth it will ensure he will become a good pilot if he stuck it through.
Only bit of advice is whatever route is taken outside of the RAAF, remember it's 'your' money being spent..