Very nice and congratulations! SFH start to show their gender pretty good by weeks 5-6 though some can be discerned earlier. But it's in the comb/waddles/behavior not feathering at that point. They have been a mixed bag of curious/ friendly to the opposite end of the spectrum for me and down right flighty. In my huge flock it's been difficult for the SFH to stand out. But with recent reductions, the hens are coming around more.

Make that hen because my other one was lost recently to egg binding after being broken from broody.
Curiously, I'm gonna call 2nd from the bottom on the left a cockerel due to coloring. So far when I see the bright stuff coming in early it's a good indicator.
I excell at hatching boys. So far for SFH my first hatch was 7/9 boys and second (broody hatch) was 2/2 boys. So 9/11 boys and 1 of the 2 girls was taken by a predator.

The straight run chicks I got ended up being 5/8 boys. Just makes the girls even more special!