Need Help ( I have to win out to make playoffs)

[wakeboarder87]

my roster ( no flex starters in my league and not a ppr league)
QB Peyton Manning
RB Ronnie Brown Deangelo WIlliams
WR Larry Fitzgerald Mike Sims-Walker Bernard Berrian
TE Tony Gonzalez
K Matt Prater
DST Cardinals ( they have a pretty easy schedule going forward)

Bench Pierre Thomas Ladell Betts Jamall Charles Chester Taylor Ben Rothliesberger.

I had Donald Driver but gave him up in a trade to get deangelo williams

I have a trade in the works to get either Brandon Marshall or Steve Smith. Id be giving up Jamall Charles and Ladell Betts for one of those two guys i mentioned. Who should i ask for ?