Hit the deck, as I see it you have three methods of getting into ATC in Ireland.
Join the army and hope at some stage in the future they seek ATCs and you are lucky.
Keep an eye on your local airport (Galway). Get in the door and built up some aviation experience, even a summer job. You might get lucky, every few years the smaller airports train up their own ATCs. Galway did this last year.
When you reach the right age, go for the IAA student ATCO programme. Your time in the local airport will go some way towards proving that you are very keen on an aviation career.
Its a tough time in the aviation business at the moment but 2 years from now we may be out the other side and business could be on the up.
The IAA provides the best number of opportunities.
Enjoy your work experience !!