The best advice I can give you for gaining all your crews for CV6 is to simply lvl a BB crew along with it so you can use those sailors.
Alt method to getting all the required sailors would to simply be rotate sailors out as you lvl or if your lucky and go IJN you can simply go both CV lines.
Bridge Operator
Prefered – Elite Repairman
Alt – 12 / 11 Repair Stat
Fighters
Prefered – Elite Fighter
Alt – 12 / 11 Fighter Stat
Dive Bombers
Prefered – Elite Bomber
Alt – 12 / 11 Bomber Stat
Torp Bombers
Prefered – Elite Bomber
Alt – 12 / 11 Bomber Stat
Seaman
Prefered – Elite Fighter
Alt – As high as a fighter stat you can find with 10’s on repair/restore stats
Repairman
Prefered – Elite Repairman
Alt – 12/11 on repair stat
Basic Crew Setups to aim for
HA / Fleet War Events
8 Fighters / 1 Seaman / 2 Repair or 8 Fighters 2 Seaman 1 Repair
GB / moments of boredom
6 Fighters 2 DBs or TBs 1 Seaman 2 Repairs or 6 Fighters 2 DBs or TBs 2 Seaman 1 Repair
