Dropping Cotcherry for Collie?

Long Term?
Someone of them will be the 4th/5th WR (i.e. only started on eventual bye weeks and when they have soft matchups).
Jets have just got another WR, JC looked bad (prob. because of his injury) and Collie is looking good plus he's got a QB who's putting up numbers every single game.

Or.. Do I drop Bush? (Though I think he's got more upside than them other guys but maybe I'm overrating him, I just don't want anyone to pick him up..)

Or do I take the gamble he wont be gone (which I believe he'll be) and just ride the great wave of luck if that happen.