As a fellow Green owner (although thankfully in a PPR league), I can empathize with you. However, I still think he starts for you this week--not because you drafted him high, because he's a "stud", etc., but because he's the most talented guy on your roster and has a juicy matchup (look at what other WR's have done against the Bills this year). The Dalton concerns are valid, but only to a point. Green has produced like a star in the past, and guess who was throwing to him? Dalton.
Decker, Green, and Torrey, IMO, are your guys. Hard to sit Gordon, but these three are better plays. Nice group of receivers, BTW.