But what you're saying is bad advice, if you have the ability and drive to be aircrew, why join as groundcrew etc for 5-10 years before applying and maybe not getting through at that point...
You can hardly say that a 4th dry etc is the same as an LAC/PVT! Apart from anything else NCA get paid twice as much....
How many people have you met that said, "I was going to go aircrew, but never got around to it...." etc etc etc.