I am about to go on a trip from LAX to TPE, HKG, PER, SYD, BNE, AKL and NAN. The first part of the trip (LAX, TPE, HKG) are set in stone, the rest will change.

How flexible is the Circle the Pacific airpass? Can I lock in the first part of the trip and fill in the blanks later? Can I back track the locations - HKG to AKL, then to PER, or does it need to be in one direction? If I buy a J cabin pass, what happens on a two cabin aircraft?

I am not concerned with the price as much as the flexibility. Am I better off with a CP2 or point to point tickets?