I'm not sure. Seems like a pretty fair deal to me. For that reason, I might not do it.
Seriously though, this trade should make you think very hard about the relative merits of having keepers vs. succeeding this year. I think the Rollins/Hamilton combo is likely headed for a better combined year than the players you are being offered. But Reyes is already a top-of-the-line talent and Young could be on the come.
As long as the deal keeps balance on the rest of your team, I think I'd do it.