Hello again,
If you knew the route then going down would be easier as there would only be one rappel. (The vertical root ladder has a sling rappel point, but it is easily down-climbable). The problem is that route finding is somewhat difficult (when to go left or right around cliffs and when to hop on knife edge ridges, etc.) Also the route off the ridge to the final rappel would be impossible to follow unless you knew where to go. I think the route finding is much easier going up. You only need to bring slings, there is no rock around that is solid enough to anchor anything! Probably 8-10 large slings would be fine. If you go down the route it would also be difficult to find the start of the correct ridge. The point where the ridge meets the plateau has no indication whatsoever that a trail exists there. When are you planning to go?
Take care,
Chris Kesting