Should I make this trade?

It looks all right for you, but make sure that you have a decent backup 3B, since you're not getting one in the trade. Rollins is probably just a tiny bit better than Cabrera, since Cabrera is on the Tigers, even though they're doing really bad right now. Manny is probably about equal with Tulowitzki, but Thome is better than Pence, and right now Lilly is doing really bad, so Carmona is probably better than him. Go for the trade if you have a decent backup 3B. Cabrera and Tulo are already a very good combo, so this is a good trade only as long as you have a decent 3B already.