You will be lucky to find a job anywhere in the world full stop to be honest. Your big hope in Ireland is CityJet ... and they may not even base you in dublin. Northern Ireland won't happen I'm afraid. Thomas cook are closing their pilot base there and easyJet don't take low hour people outside CTC/OAA/FTE. It's also highly unlikely Ryanair will base you in Dublin too ... expect the continent. Aer Lingus have taken low hour guys in the past, but that truly is a lottery. I wouldn't plan on it.
Factor in moving your family or you moving and not seeing much of them. Also factor in spending at least a year with no flying income post graduation ... some don't take that long and some take longer to find their first job.
That sounds very grim I know ... I'm afraid that is how it is though.
I wish you luck