Gibson is WW fodder depending on the depth of your league. He's still getting some minutes right now off the bench since Boozer's still being eased into the rotation, but unless Boozer goes down again for a lengthy time period (not out of the question), he's droppable in most leagues.
I would take the deal for Monta mainly, who is the best player in the trade. Curry got hurt again tonight too and got carried off the court, so Monta's probably going to explode, at least for a while. Taj is waiver fodder as Tian mentioned. Beasley and Blatche are about even, at least in my view.