Give: Shonn Greene & James Jones for Schaub - WHIR

[blmurs]

I'm in a non ppr seasonal leage and contemplating the above trade. Greene is my 3rd running back behind Foster and DMC and trading him leaves me with only Tolbert as a backup. James Jones has been playing well recently but is my 5th WR behind Fitz, White, Dez and AJ Green so it's pretty unlikely he'll ever get off my bench. I have Stafford but would love Schaub as a backup with Stafford's injury history.
Greene has been playing well and now has 3 20+ carry games in a row and losing him would hurt my depth expecially with DMC's current injury status. Is Tolbert a good enough 3rd RB if I trade Greene?
One more thing to consider is the free agent QB's: Jay Cutler, Kolb or Ponder. I could grab any of them for nothing and keep Greene.
Any thoughts? WHIR, as always.