In my profile pic, that's a hen in the foreground and my roo at the top back. You can see him standing tall and his red wattles. They were about the same age there that yours are now.
Yup, I agree. You definitely have two roos. Their combs are big and red and you can see their wattles coming in. Other tells for my roo was that he was the only one who would take nips of my fingers when pointed at them, the girls would ignore my fingers, and he'd have the roo stance--big and...
How'd she turn out? To me, her tail says Pullet. Long straight strong tail feathers.
I've got 4 SLW chicks now--7 1/2 weeks (all from mypetchicken.com), but I'm afraid that 3 of the 4 are roos. =(