Follow about 4 bolts up the arete, but at the roof clip the bolt out right and traverse underneath the roof and then up again. Feels a little contrived, as you could climb above the roof and simply walk across, but the hanging traverse thing is what I think is intended - it works well with the bolting and you get to do some fun heel hooks. Get a friend (or tourist) to take some badass pictures of you from across the valley.
Right-most sport route when facing the window from down in the valley. After going down the stairs and under the guardrail, we found it easier to go slightly up the valley, then traverse up high (class 3?) across right to the base of the climb.
about 7 bolts to a 2-bolt anchor with maybe a rappel ring or two. Also some bolts to anchor the belayer.