I think both Sutton and Waddle can be in the #20 +/- WR range. Sutton being more consistant with his numbers weekly. Waddle having more big games, but being more up and down weekly. Sutton gets the receptions and Waddle gets the yards.
Before I start offering up Gibbs I would put him on the trade block and see what offers I get. Let the league know he's for sale and see what offers you get.