iam shooting in Asia and find a blue-ish back light works well with very dark hair colour.. but for blond/lighter would usually go for a warmer back light.. (besides when a specific “look” is required)
As long as you have a large source soft light,close to the subject.. 3/4,s angle should be fine..
Sorry if Im telling you stuff you already know..
PS get the sound recordist to carry heavy gear 🙂 they are always counter balanced by the weight of their wallets..