With the red in those wattles, I'm thinking maybe male, but I would probably give it a bit longer to be sure. Most males become more obvious very quickly after they start to show.
Cochins have feathered feet and single combs.
Your Silver Laced chick appears to have clean feet (no feathers on them) and a rose comb (wider and flatter than a single comb.) Those traits are right for a Wyandotte but wrong for a Cochin.
So I am pretty sure you have a Silver Laced Wyandotte there.