1) Tyler Eifert TE - Notre Dame(I would explore all trade down options before drafting him at 12.)
2a) Johnthan Banks CB - Mississippi State
2b) Justin Hunter WR - Tennessee
3a) Cornellius Carradine DE - Florida State
3b) Le'veon Bell RB - Michigan State
Tavon Austin was the guy I wanted the past few weeks at 12, but Eifert seems like the safer, and overall better pick now. There is no telling if Keller will be here after the 2013 season closes. Eifert is a near lock to be a serviceable tight end, and displays INCREDIBLE hands when in tight windows, and there is no one better at the tight end position during jump ball situations.
At 6'6, Eifert has the height you want in your starting tight end, and solid footwork to make open field defenders miss. He has above average speed for his position to run the seam and has the agility of a WR.
(I will discuss the rest in comments. )