Highbypass G'day,
Firstly, completely forget worrying about your age. It's only an obstacle if YOU make it one. Secondly, aim for the majors, if that's what you're really after. If they don't work out, regionals do offer a great career, don't sell your self short.
Thirdly, get rid of the wife & kid, they're only going to be a hindrance & worry, only joking mate.
Having spent some time in Darwin, not only is it the best place to get
solid charter work, eventually progressing to twins, but your family will probably find it a pleasant place to live.
If you cannot get a flying position straight away, you'll be able to find other work.
If patient you should get a position.
Before you leave Vic, complete you're ATP's.
Don't leave home without them!!!
Finally as a word of encouragement, I did not
get my first position until I was 31. I am currently flying twins, at 2nd stage with a major airline, on the hold file with a regional. I am 35 yrs.
All the very best & good luck to you & your family.