Hi Paul,
It's lovely to hear that you are joining us for a coast to coast walk!
Walking is a great way to get to know the landscape and people, and there are plenty of lovely walks and hikes to choose from.
There are some existing community posts, I have listed some of them here for your convenience, please feel free to have a look and see if there is some information that helps with your plans.
Wicklow Way: Knockree-GlendaloughExperience staying in an Irish B&BThere are also several walking tour companies that offer self-guided walking trips that may also be of help to you in your planning and moving around the country.
Wonderful Ireland Walking Holidays and
Footfalls Walking Holidays are all tour operators who offer tours in the area mentioned in your attached itinerary.
The Pathway Porter is a company specialised in moving luggage about for walkers and cyclists so you don't have to worry about carrying all of your bags with you. This may also interest you as I'm sure, a few miles without your luggage may be a blessing!
As mentioned in the Irish B&B post above, B&B Ireland also has a special category called
Walkers B&B where they have information on B&B accommodation especially for walkers in mind.
I hope this gives you lots of inspiration, and I'm sure your fellow members and some industry partners will be able to add to this list!
If you need any more help, just let me know!
Martin