I'm assuming you have a guide book and have started initial planning. DK Eyewitness Ireland is a good place to start. It has lots of photos and enough detail to get you started. It also covers places ignored by the oither guides. It has suggested itineraries and the maps are adequare for initial planning.
Are you planning to spend any timne in Dublin? If so, consider flying into Dublin and then out of Shannon as it seems as if most of your time will be spent in the south west. If not wanting to visit Dublin, consider flying in and out of Shannon.
Will you have a car?
Looking at your suggestions, you have virtually got the 14 days covered with bases in Killarney or Kenmare, Dingle and then Doolin. Dingle can be explored from Killarney but that would involve longertravel times in the car.
Killarney/Kenmare - Ring of Kerry (go and find the stone ring forts) and also include the Kerry Cliffs. There is Killarney National Park to discover with its lakes, Torc waterfall, the ruined Ross Castle, Muckross House and Traditional Farms, Gap of Dunloe.... If time allow also think about a day trp to Ring of Beara.
Dingle - Slea Head with all its attractions can easily fill a couple of days. Visit Tralee. Use the Killimer/Tarbert ferry between Dingle and Doolin rather than going to longer way round via Limerick.
Doolin - for its music, Cliffs of Moher, Burren (it's limestone scenery is complertley different to anywhere else in Irreland. Go and find the ruined Corcomroe Abbey. Aran Islands can be done from Doolin. Do try and spand the night on them rather than just doing as a day trip.
The only other suggestion would be to spend a few days in County Galwa to explore Connemara. You could stop in Galway itself or else a smaller town like Clifden. Scenically it is good as places south and you can also do a rip to the Aran Islands from here. The Sky Road Drive from Clifden is well worth doing and on a sunny day is possibly one of teh best short drives in the world. There is the ruined Aughnanure Castle, the Victorian Kylemore Abbey and its gardens, do a cruise on Killary Fjord....