Is your end goal to win or to build? I think all three will help you win AND are worth building around. That being said, from what I can see, none of them are keepers for you. If your team is competitive, I'd hold and see how the season plays out. If you don't think you can win (and I am not sure how you can determine that this early in the year) then I can see dealing them for picks. To be honest, unless you can upgrade one of your keepers, I don't see any reason to trade them.