I had a pair of those on a Hyde Harrier, they are very, very good.
However, the sheer amount of adjustability can have you chasing your tail if you're not careful.
I'm sure a man of your calibre will be fine, but for what its worth, my approach was to set everything to the starting point recommended in the book and then follow three rules:
Firstly, understand (and record) the extent of adjustability of each setting.
Secondly, based on this knowledge, adjust compression, rebound and preload settings together pro-rata (shocks are not devices containing 3 seperate functionalities, they are a cohesive 'system').
Finally, always adjust in large amounts, each single click will be unnoticeable to a normal person (I calculated 4 basic settings as a start point, all pro rata, and one of these ended up as my 'ideal' setting).
When you have a good final setting, then fine tune each one individually if required. But in theory, if Ohlins know what hey are doing (ie the cohesive system comment) this should not be necessary