Skywalker ESC 50A + Racerstar configuration

Hi

Does anyone know what additional configuration I should use with the Racestar 2216 KV1400 Motor for efficient flying? Are the factory reset values good enough with Arducopter 4.3.8 and above?

I am unable to locate the older version of the Skywalker 50A ESC user manual.
I believe V2 and the previous version, previous version does not support programmable items 8 and 9.

appreciate those who share your configurations and help.