You may get more advice about helo schools in the helo forum if you haven't posted there already. Likewise the employment/remuneration info.
From what I can gather from when I was in Kununurra, the helo guys have a bit harder time of it than the fixed wing guys. I don't know their pay rates but they do get onto the turbines a lot quicker. The flying was pretty amazing though.
Not sure of the top pay for a captain on a multi pilot helicopter, I think it's around the $A65K mark.
Good luck