Hi,
You didn't say when you will be there. That could impact your decisions. Are any of your locations musts?
We just returned from 12 days in Ireland at the end of May. We were lucky not to have to deal with crowds anywhere. I would advise not doing all of those single nights. And maybe take off Kinsale because of location. The previous suggestions of doing Dublin last are a good option.
We spent 2 nights in Dublin and thought that was about right. We headed to the airport to get our car and went to Powerscourt, through part of Wicklow national Park, Glendalough, Kilkenny and to our nearby hotel at Mt. Juliette. That was an entire day. It was pouring down rain the next morning. We quickly started editing. We felt it was much more challenging driving on the left side than we anticipated, doable but not relaxing. Driving times were always 25% longer than projected. And that was in May. We did not want to spend our whole trip in the car. It was hard to cut out the southern part of our trip, but it was the right decision. We ended up in Kilarney, Dingle, Doolin and Westport.
I would suggest something like:
2/3 nights in Dublin
2/3 nights Westport
1 night Doolin
2 nights Dingle,Killarney or Kenmare
2 nights move to another location of Dingle, Killarney, or Kenmare
2 nights Kilkenny
or 1 Night Kilkenny/ 1 night Dublin returning the car before Dublin hotel/airport hotel
We literally got out the day before all of the horrible lines started at Dublin airport. I don't know what the recommendation is now for when to get there. We got there 3 hours before our flight but had to return our car, but did not go through US customs. We had time to grab some lunch. You will have a wonderful time! Just make time to relax and enjoy the gorgeous scenery!