PPR League RB HELP!!! WHIR

[nesharims00]

I just completed a 14 team PPR league and I'm a bit bummed out with the runningbacks I ended up with. Do you guys think I'll be okay with Chris Johnson and Leon Washington as my starters? My WRs are R. & S. Moss, D Bowe, A Gonzalez and Chris Henry. Should I look to upgrade RBs? Also I got Patrick WIllis as my IDP (individual defensive player) but I'm wondering if i should get Josh Wilson (CB) since he gets alot of kick return yards? Thanks.