I think I would have to pass. If it was Kevin Smith, like your original offer then yes, but you are giving up 3 starters for 1 (albeit, the best). Its going to take a miracle for Steve Smith to have a superstar 2nd half and Celek is just a viable an option as Carlson. Mike Bell's got some nice matchup and DJAX gives you a very sweet WR corp. I may do it if Bell or Jax was not involved.
14 Team Dynasty PPR 1st yr leagueQB, 2RB, 2WR, 2WR/RB/TE, K, Def
QB Schaub, Dalton, Gradkowski
RB Forte, SJAX, B.Jacobs, M.Lynch, Ingram, M.Goodson, McKnight
WR M.Williams (TB), Crabtree, J.Ford, G.Tate, Benn, Roy Williams, Damian Williams, Doss