Oh, and here's how the cockerel turned out (at least before his 1st molt, which he's threatening to do right now). In that first picture, you can see his tiny yellow hackle feathers starting, much more pointy than what the pullets get.
Hackle & saddle feathers start showing up in that...
Yeah, those neck feathers will scare you, but pullet neck feathers become more pointy looking as they mature. Also, some people worry when they see iridescence, but dark-colored hens can have just as much of that beetle sheen as roosters.
I also see pullet. Here's a photo of a 2-month-old EE pullet (left) and cockerel (r). The pullet's comb is a little pink already but smaller.
The cockerel has a telltale 3-row pea comb, which can indicate a boy, and it's much redder. He also has orange splotches and uneven feather patterning...