Kay
We're coming over in the summer (August) at with daughter doing AS levels we are stuck to summer holiday really as Easter is too close to exams and half terms aren't long enough, so we'll just have to put up with whatever the weather throws at us.
I'll be in touh to find out more about the area if you don't mind. When you get there, no matter where you go you suddenly find all these places that would have been nice to see but you don't have time to fit them in the itinerary.