Kilkenny, Cork, or Kinsale??

Hi everyone! We are visiting Ireland in March and we have already planned for Galway, Dingle, and Dublin. We have one night left to book and we are between Kilkenny, Cork, and Kinsale. Does anyone have any suggestions as to which we should pick? Thank you in advance!

Edit: We are flying into Dublin and staying for 2 or 3 nights, then going to Galway for 3 nights and then Dingle for 2!