Silver Laced Wyandotte and Speckled Sussex chicks, pullet or cockerels?

[Barnyardchick01]

Hi everyone!! I bought this 4 week old SLW on March 12th so I know it's still young but any opinions yet on cockerel or pullet? I also have a couple Specked Sussex I bought as a straight run and I'm pretty sure I got a pair but would like other opinions if possible. First 2 pics of the Speckled Sussex are the same chick.

 

[nuthatched]

The sussex with the pronounced comb are male.