Should I drop Wes Welker for Devin Hester? ?

I know it might be a little early to look at week 7 but I have to recievers (Fitzgerald & Desean Jackson) on a bye and my recievers would be (for week 7) Chris Chambers, Santonio Holmes, and either Wes Welker or Devin Hester.. or should i consider a different reciever? Thanks alot for your help