This route doesn't get nearly the traffic that it deserves due to the crappy access pitch. The exposure feels huge because it's an arete, and you get the feeling of being 500ft off the deck, even though it's not even close. The free rappel into the cave is also stellar. I love this route (even though it feels more like 5.6 than 5.8).
We were wisely advised to rappel off to the right over the edge to a gully (approach to Cacoffiny). A 60m rope is adequate. Communication with second was impossible due to freeway noise, position of belay and distance to bottom.