8 nights in March - Itinerary Recommendations

Greetings from the Emerald Isle!
Id definitely extend your night in Dingle by a night, and try and include a night in Kinsale. These are always the highlights from the hundreds of Rick Steves group Ive led around Ireland for 15 years.
Overnight on the Aran Islands would be very cool, but it is a bit of a logistical challenge and the weather in March might be a wee bit rough. But its doable and you would definitely be far from the madding crowd.
I love Ballynahinch Castle, thats a great choice.
Dublin in one night is too short in my opinion, but hey, you can always come back, and you can utilise your time to see the mina sights and get a nice overview of our very enjoyable and historic capital city.
Is mise le meas/from me to you with respect
Stephen McPhilemy
Ireland

Thanks so much for your suggestions! We'll get to work on this right away.
Shelley

I would definitely suggest another night in Dingle! It was a great place to stay and one night isn't enough. I really enjoyed the Aran Islands, we stayed the night before in Galway and spent the day on the largest island. We biked out to the fort at the end of the island and really loved it. We took the ferry back and spent another night in Galway. I personally preferred Dingle Peninsula the the Aran Islands over Rock of Cashel (which was still cool) and Cork. Dingle and Aran Islands were the highlight of my trip! We actually spent three nights in Dingle and really enjoyed slowing down and exploring around a bit. If you only have three nights in between you may be rushed to do both Dingle and Aran Islands. Having two nights in Dublin would at least give you one full day which would be nice. Always assume you'll return!