Bush for Harrison Trade Advice

[AndyJ1134]

I am in a 16 team PPR league.

I receive: Jerome Harrison, Alex Smith, and Brian Westbrook

He receives: Reggie Bush and Kyle Orton

My RB and QB situation is as followed.

QB: Matt Schaub, Kyle Orton
RB: Portis, Reggie Bush, Maroney (we start 2)

RB is probably my weakest position (My receiving core is rather good with Andre Johnson, Dallas Clark, and Jason Witten) and want to upgrade.

I think Harrison will have a great year but im hesitant to trade away bush in a PPR. What does everyone think?

Alex Smith and Orton seem like a toss up for me, So I dont really care between the two.