The length and steepness of the crux ice pitches vary from year to year. The year I did it we climbed 120 meters of 70 degree plastic, blue ice, preceeded and followed by a bunch of 40 degree neve'. A skilled climber could have followed the pitches with a single axe, but other years the route is steeper. I would personally always bring a second tool for this route. FWIW, I climbed the route with a 60 cm REI (SMC) axe paired with a 50 cm SMC Himalayan Hammer and thought the combo worked beautifully. As for ropes, doubles would be ideal, each follower following on a separate strand. In a pintch you could double the 60 and just climb two more pitches.