Im guessing you're still at Moose Jaw? In a couple of months time you can speak to one of the Brits on 419 and ask them directly.
As a member of the commonwealth your chances are actually pretty good. Your timing is also good. The RAF is taking all sorts right now. We have many guys who have joined recently from other Commonwealth countries.
I am current RAF but served on 419 not so long ago (I have Canadian Citizenship as a result). I will not advise you either way since it's your decision to make. What I will say is one Air Force can be much like any other. I could bore you more but it sounds like you may wish to bide your time a little. Once you have some Hornet time under your belt you'll be a sound prospect for the RAF.
Best of luck and enjoy 419 when the time comes
BV