My husband, myself and another couple want to visit Ireland next April-May. We will have 14 days. I would like to fly into Shannon and then travel to a B&B outside of Tulla where we will stay for three days. From there we would like to travel to Donegal for another 3 day stay and make our way back down the coast to Shannon for our departure. Is there a recommended place to stay in Donegal? Is this to ambitious for a single day? Suggested places to stop to break up the day?