Also, if you don't get your first choice (RAAF), the training you get in the other services is nothing to be scoffed at either - different emphasis for the roles, of course, but back in the days when helicopters were run by the RAAF they were a well sought-after posting out of 2FTS, so don't discount those options.
A decent number of individuals (you know who you are!!) have done the two or even three service shuffle for one reason or another - can keep life interesting to do so, as well.