In reply to madmats:
the large gear is for the bottom of the vertical crack after the boulder problem crux not the upper one. Think i used a silver dragon 6/ or wild country friend 4, think blue cam would be too small until a bit higher up the crack but it wouldn't be much bolder. After that you reach a horizontal break that takes a variety of gear for the upper crux, think large cam options on the left (blue cam?) through to green cam on the right or wires but my memory is a bit hazy.
you could watch this if you want some more beta