AJ,
Chances are very high as long as you prepare a short note (possibly slightly longer than the one above) detailing your love for flying, ambitions etc. Remember to mention, or even include any licenses you have.
Hand it to the No.1 on boarding. As long as you follow all the usual common sense rules, I doubt you'll have any problems at all. Allowing keen wannabes to ride on the jump seat is one thing that Ryanair ARE good at.
Why didn't you fly Go!!!