Why Roster to the Max of the FTL's?
Mate in HKG (and only HKG I might add), the CAD (and therefore KA and CX) deem the CAD document to be a "working document!" That means you can (and should) roster to these limits. No buffering need be applied.
I kid you not....from the FTL manager in KA....so don't hold your breath for any common sense.
What I love is that the very people who decide on the interpretations are the very people who don't have to go out and "do" the flight.
Gliderboy