PID tuning the Ghost 2

Facing the challenge that this pretty lightweight quad is dominated by the (out-of-center) weight of the GoPro.
Trying to find a good tune for it ...
Mode 2 Ghost
DYS F30A
DYS F4 Omnibus Pro V2
Lumenier MX2206 2450KV
GEPRC 5040x3
GoPro Session 5