Fantasy shortstop situation?

Here's the ss I have, I have Reyes and jj hardy (he's really hot now .304 9hrs) starting. I also have Hanley ramierez kn the bench. I have someone interested in Hanley but will he heat up and the other two cool down? Should I trade him away or keep him. I would most likely get Justin upton in return for Hanley and a outfielder like Logan Morrison. Advice please!