Bedard is my pick as well. His stuff has always been there... the health hasn't. All reports say he's been fine this spring, and it's worth the risk. As for the lack of offense, it will limit his wins somewhat, but I don't think you're passing up any great options on the wire.
As for who to drop - does your league have DL spots? If so, I'd probably just wait a few days for Utley to be placed on the DL. If not, it's between DeJesus and Belt... I haven't heard the latest rumblings out of Giants camp about Belt making the team or not, but last I heard he was not going to break with the team. If so, and this is only a one year league, I'd drop him.