In reply to chmckay:
Hiya,
I didn't climb this route but the principal abseil from the summit goes over it. 50s should be fine but be careful. ~the rock is also quite snaggy there. From the summit you scramble down about 50/60m to the first abseil point which is surprisingly hard to see but then the next two are fairly obvious and that's it.
Amazing place, enjoy it and get a photo of the Maria at the top!
H