Should I do this fantasy baseball keeper league trade; I give Rollins and webb for haren and miguel cabrera?

I like the trade without the exchange of draft picks. If you give up the draft picks along with the players, then it's not worth it, as Pronk already stated, SS is the shallowest position in the talent pool, and Webb is the ace of the two pitchers exchanged. I'd say, make the trade if you only give up a 4th rounder for a 5th rounder. If he's stuck on you adding a 2nd rounder, then forget it, you already gave up equal value.