I think you are fine at WR if you start 3
Manningham, CJohnson, MWallace, and DBryant are all solid plays no matter who they are playing here on out.
However, I am not convinced Nicks comes back this year (they said 3 weeks, but that was a VERY serious injury and even if he does come back and lay week 15 and 16 would you want to start him first game back?)
Also I think it is OK to drop Lewis now you have to play Gates if he is on the field. Gates at 85% is better than every other TE.
I think I would drop Nicks and pick up Branch.
Help me, m link:viewtopic.php?t=487023