Yeah, I guess we didn't really answer that really.
Millet isn't found in ANY scratch here. I add it in, because it is very good for them, and they love it. It's high in protein.
Chicks should be on chick starter until they reach 8 weeks (I believe..) than they should go on grower until they start laying. I wouldn't feed scratch until they are at least 8 weeks, and it isn't even recommended at all.
Oyster shell should not be fed until at least 20 weeks or so. Grit...