Richard, good to hear from you again. I have not played overseas yet, but I have been spending the last few months working on itineraries for Ireland trips. I think I've come up with no less than five so far (Dublin, N.I., SW, West, Northwest). Based on what I've researched, I would say Island or County Louth would be the best options in Dublin for what you're not already playing. Island is going to be closer to Dublin.
As for the other stuff, you're more optimistic than I. My group is planning for at best 2022; possibly 2023, depending on what can be arranged, and keeping our eye on various travel policies. We ended up settling on SW. Hope your trip goes well!