I wouldn't trade down past #10 because I think we would lose most of the DT talent to Cleveland, Baltimore and possibly Philly. The middle of round #1 seems to have a lot of WR, RB, and CB----which isn't a priority in the 1st round for us I don't think.
If we picked up and extra #2 I would try to trade up in round #2 to see if we could snag one of the other top O-lineman. Some of the mock drafts show a run on O-lineman at the top of round #2.
I'd love to get Nick Mangold © of Ohio State. Do you think our center position is solid enough with Fowler or Preston?