With 5 bench spots, you should hang on to Bonds for the next couple months. I have him in my 5 bench spot 12 team league. Towles probably isn't worth it to keep on the bench in a 10 team league, but its a toss up. Hes not going to be a Russell Martin by any means, and the catching position is relatively deep this year so in a one catcher 10 team league no one is going to be salivating to trade for him. But if you are cool with it, he wouldn't be a bad use of a bench spot for a couple months either. Also, 5 closers is overkill, even in a 10 team league. See if you can trade Wood (especially if you are in a league with cubs fans). What is your IP situation?