So sorry you had to cancel your trip in 2016, but I am very happy we get to welcome you here in the near future, Kerry. :)
It's a wonderful idea to explore the
Dingle Peninsula as an addition to your initial trip, as it really is an area you wouldn't want to miss. There are many tourist board approved tour operators who would love to show you all that Dingle has to offer, and you can find a complete list by clicking
here.
Walking Boots Tours and
Wonderful Ireland Walking Holidays both specialise in walking tours in the area, and you can get in touch with them for more information. They can also tell you more about pre-booking your tour, and if you're able to adjust the schedule if your plans happen to change.
I would suggest to do the same for the
Great Blasket Island tour, as they will be able to recommend how far ahead to book your tour.