Post w car sharing in Ireland ---- (rented cars and private lifts)

Hello On the 18th I'd like to go to Killarney from Dublin for 2 days hike in this area. Then I'd be thrilled to go to the Lough Gur'stones circle on the early morning of the 21st (to celebrate the summer solstice). After that the idea would be to be based in Limerick and go see the Cliff of Moher and back in Dublin on the 23rd or 24th. I welcome car rides and sharing for all of this, with splitting of the costs of course (I don't like to drive myself). Thanks!