Need advice on a trade in fantasy baseball?

I am in a 11 team, roto, fantasay baseball league. I am in the top 3-4 in all hitting cats but need some help in pitching. It's a 3 player keeper leage to boot. Anyway, I was offered Carpenter & Beckett for Braun - I am hesitant to trade Braun considering I will be able to keep Braun for 2 more years and to me, he is a top 10 player. But, like I said, I could use some pitching. What do you think?