any recomendations of good gels?
Not very good on this. Only in looking at pictures.
What color do you want to achieve on the snow flakes?
White? If yes I'd go for RAW with WB in post and white to blue gels.
Shifting that to white again should give the skin tone a (more or less) red tone.
(Or I did my intuitive chromatics wrong )
Yes I'm aiming for white in the flakes.. or even a hint of blue.
I'll need to get the flash colour down to around 2000Kelvin to get that effect. (2500K in post gives me white flakes)
I'm shooting RAW with flat WB to get the exposure right, then playing with WB in post.
Frank: I don't have a gold rescue blanket, it's a reasonable idea but I think it won't be "deep" enough.