The best crew for SN CV is 2 fighters to defend your ship, 4 dive bombers because the russian DBs are the best at damage and ability, one scout to better locate the victims of your bombers plus seaman who help you repairing your ship and increase the all sailors ability. Finally an engineer to dodge enemies tb, db and run fast to the subs.
4 Dive bombers
1 Seaman (high stat in repair, fighter and bomber)
Do not forget two gunners always important.
Remember this is my opinion on CV of Russia only.