I was headed from Inishannon towards Kinsale and nearly ate the front end of an oncoming SUV on that second turn (the first right hander) It's incredibly blind headed that way and I way under-gauged the turn. As you get towards the coast things improve dramatically. The later portion of the route is a solid 5/5, though. I would not recommend this road if you - like me - are not used to Irish B roads.
Nice spin from Cork to Inishannon on way to West Cork. Lots of nice places to eat in Kinsale.