Nin tai *ion and injury add a bit more damage, i have red of those chakra, but it doesnt add that much, maybe around 40-70 damage against kakashi clones,
Its better to focus on 5 basic stats, and ini,,the other slot i usually fill with control (later on you will see some people failed on controlling your ninja, especially when you fight someone with lower stats on swb or matsuri) or combo (personally i put my red combo on mei, she randomly acupunture people with her std attack)
Not quiest sure if damage reduce and life heal matters much