Hi Bart,
What a wonderful idea to go on a hiking trip on the island next year! I'd love to see what I can do to point you in the right direction.
Overall I think that the second half of April is a good time of year to visit. This means it won't be too warm or too cold, and the days are getting longer. To get an idea of the Irish weather, take a look
here.
The Dingle Way sounds like it has everything you're looking for in a trip to Ireland! It'll take between 8 to 10 days to complete on foot, and you can arrange
accommodation along the way by yourself or via a
tour operator. How long are you planning on travelling around?
From Dublin, you can hop on either a
bus or a
train to Tralee, and it will take about 4 hours to get from the east coast to the west coast. There are also flights available to Cork, and from there it's about two hours to Tralee by
public transport.
I hope this was helpful, and please don't hesitate to reach out to the Community if there is anything else you'd like to know. We're always here to help! (We are also happy to assist you in Dutch if you prefer. :) )
Groetjes,
Melin