Honestly, your best bet to to go to the closest recruiting centre and ask them directly. That or check the air force website. That lists all the basic requirements for Direct Entry. I forget the actual term, but its something like Direct Entry Officer Training Program - something like that.
They will also be able to let you know what your chances are. They will know the exact number of positions that need to be filled and on what type of equipment. Remember that with the military just because you started fixed wing does not mean that they will not put you onto helicopters, or visa versa.