I don't think I'd make that deal.
First, if your scoring is anything like the IDP leagues I am in, the IDPs score less or the same as middle road TEs and Kickers.
I have had more success playing IDPs like defenses, going with matchups and picking up and dropping them at will. The exception to this is if your league rewards kick returns which places a premium on DBs which return kicks.
Next, if Cutler leaves, it might hurt Scheffler more than anyone on that team depending on who Denver puts at QB. He might not end up being an upgrade over Shockey at all?
Finally, if I traded Jackson, I'd want a TE no less than Cooley, D. Clark or Houston's TE.
Looking at your roster, you have trade bait in Rosenfels and might look to deal him to a team without depth at QB who has a few TEs worth starting.
Help me too? viewtopic.php?f=18&t=436019