With that "eye liner" if she turns out to be a boy, you'll have to rename him Boy George

Looks like it MIGHT be a 3 row comb which I understand suggests boy. Here is Andromeda at the same age:
So you are saying that the bird is MINIMALLY 23 weeks old? Certainly old enough to be close to lay. Mine started at 21 and 24 weeks. Combs got red about a week before. I agree with Lynda, those feathers do look like pointy male saddles. Are there breeds in which the girls have pointer saddle feathers and this could be a cross with one? Can't really tell about the hackle feathers (behind the head), they are all so nicely white, I can't make out shape.
With regard to jumping the other birds, my dominant girl is an Ancona and she jumps on the other girls backs like she is mounting them. Doesn't matter if it is one of the little Cubalayas or the E.E.s which are bigger than she is (though I've not seen her jump Zorra. She's a Black Australorp and probably 50% bigger than Zia but gentle as all get out. Ya gotta know your limits

When you say the bird crows loudly, is that an "Er ER er EROOOO" crow or a "Bok, bok, bok, baGAWK" Egg song? Some of my girls sang the song for about a week before they laid. Others hardly ever sing. Just go about their business and wander out of the nest as if nothing happened.
Beautiful bird either way.
Bruce