Dont do it. Witten is really solid and it is a nice luxury to not have to worry about your TE position every week. Cook has big upside but will lay some eggs. Tate will be good until foster returns again, and then what.
10 team yahoo standard 2 qb keeper league
QBS- Rivers, Ryan, Grossman
WRS- Roddy, VJax, Santana Moss, Lance Moore
RBS- D Will, Knowshon, Fred Jackson, Mcgahee, Sproles, PT