Which Olaplex product do I need?

[Lottapianos]

I'm overwhelmed by how many products they have! Don't know where to start - advice gratefully received

My situation is:
Dark brown hair with quite a bit of grey, blonde highlights all over
2c/3a curly hair - extremely thick, coarse and porous, very prone to frizz
Hair needs a bit of protein but a lot more moisture

Which Olaplex do I need to keep my hair looking good? Thanks!

3

Or one of the trial sets

No 3, I read that the rest isn't great for curly hair so don't use any of the others.

Have ordered a 3 - thanks both 👍