It doesn't look very boyish, but the fact that there are wattles growing at 8 weeks would make me lean towards cockerel. However, some females do sprout wattles as well, I have 3 silkie pullets that are 4 months old now and I think they all were growing really small ones at about 10 weeks (however they are non-bearded). FYI, all silkies should have the blue earlobes, and at that age they will all have numerous pin feathers as well. Your silkie is bearded.
Ahh, Thank you! My first silkie so I am learning! I was unsure at the age when the blue earlobes appear. I guess time will tell as far as sexing him/her.