Gender differentiated feathering does not develop this early. ....they come in during the juvenile mini molts around 12-16 weeks.Look at the hackle (on the back of kneck) and saddle (on the back by the tail) feathers . Are they pointed? Pointed means its a rooster. Are they rounded? Rounded means its a hen. The muted red i see in the comb and wattles makes me think your polish is a hen. I have a buff laced polish bantum rooster myself and when he was 7 weeks old his comb and wattles were bright red. Hope this helps.