EnglishMartyn we have the same situation, trying to find a last overseas trip for aging parents, also with restricted mobility.
Agreed, krismiller. It is many years since I went to the West Coast with my then wife whose family were from County Clare. The Cliffs of Moher are as indelible on my memory as the Victoria Falls, way beyonds words to describe them. I'm sure the roads are a lot better since 1985 and more shops open for those driving of an evening or Sunday.
The Ring of Kerry was lovely - but CHOCK with tourists coaches in high summer. However, you only had to get away from the main roads and it was much better. I expect that you will find lay-bys and places to look at the view without having to always get out of the car.