This is what we did :
fly into Dublin: night 1, 2 and 3 Dublin
Day 4 pick up car at Dublin airport and drive to Kilkenny- sleep Kilkenny ( Kilkenny castle, walk medieval mile)
Day 5 leave Kilkenny stop at Dunmore caves, go through Cork stop at Blarney stone. Make way to Killarney
Day/night 6 and 7 Killarney ( killarney national park, Muckorss house and farms, Kissane sheep herding demonstration)
Day 8 leave Killarney to drive Ring of Kerry and make way to Dingle
Day/night 8 and 9 Dingle
Day 10 leave Dingle by way of Bunratty Castle and Cliffs of Moher
Day night 10 and 11 Galway
Leave Galway to go through Connamera and stop at Kylemore Abbey
Night 12 Cong
make way back to Dublin and spend night before flight back home
Happy to answer any questions you may have!