I'll be keen to see updates in a few weeks. :D Good opportunity to practice sexing. I've only ever sexed mongrels, though, which gets very, very random. Strange your chick just drops off on its feet, lol! Mine always laid down first. Best wishes.
1) Leftmost one looks male, not sure about others. Reason: crest development. The rightmost one has its tail perked like a lot of males start doing at a young age but so do many hens, so not much weight to that.
2) Female, I think. Reason: no crest development to speak of and evenly feathered...