I think Te'o could still be on the board around middle of first round--14-15-16 because of the demand for other higher priority positions, pass rushers, QB's, etc.
Jefferson I think would ultimately move to replace Troy at SS and could be used in a lot of the same ways.
Good RB's can be found in later rounds. Imo.
For me I would love for the Steelers to sign CB Sam Shields from Green Bay. You solid young corner who has excelled in Caper's 3-4.