It'll be interesting to see what they turn out to be.
I'm no expert on purebreds. I did have some purebreds of various breeds but didn't like any enough to keep them. My silkie males were a lot more developed at that age, but come from a very different gene pool than yours. I sent them back to the breeder unbred. I don't mind mixes but purebreds are not my thing. Best wishes with yours.
So this morning, I was working in the coop and my big silkie started an attempt at a crow! Came out as 'UH OH', so pretty sure its a boy and looking at the head now, I get what you all mean by streamers, on this one anyway, lol! Still he'll be a good male I think, he's a pretty boy!