Hi all! This is a little late, but I wanted to post a quick report on my 11-day trip to Ireland in May of 2013...in case anyone finds our itinerary or general plan helpful!
Day 1, Thursday: Arrive Dublin in the AM; Rent Car; Explore Counties Meath and Louth
Day 2, Friday: Drive cross-country in the AM, County Sligo
Day 3, Saturday: Counties Sligo and Donegal
Day 5: Monday: Causeway Coast Drive, Day 1
Day 6: Tuesday: Causeway Coast Drive, Day 2 + Belfast
Day 7: Wednesday: Belfast + Mourne Mountains; Return Rental Car/Overnight in Dublin
Day 8: Thursday: Dublin
Day 9: Friday: Dublin - Daytrip to County Wicklow
Day 10: Saturday: Dublin
Day 11: Sunday: Dublin - Daytrip to County Kildare/Horseracing at the Curragh
We wished that we had more time, but I would pick the same itinerary over again with the same amount of time (with some slight modifications!). Overall, I liked renting the car first and going to Dublin last (if you have an emergency, you're not going straight from a rental car to the pane) and I really liked heading north straight from the Dublin airport to avoid the city. I wish we could have had more time--particularly in County Sligo and the Mourne Mountains. Unfortunately, we just didn't have it. Anyway, happy to answer people's questions, and I'll eventually get around to posting more specific reviews/comments on the appropriate pages!