I think the Kilcoe church would be best. Aghadown and Kilcoe are now combined and the parish house is in Lisheen. I am not sure who the parish priest is now but if you write to the attention of the Parish Priest for I would think he would get it. The other suggestion would be for you to write to Father Michael O'Donovan, PP of Caheragh, the next east parish and he might be able to steer you correctly. Civil records started about 1864 and they should be at Skib although I believe the city hall may have been burned down during the "Troubles" and I am not sure if records were destroyed.