Here are the somewhat realistic options at 19 for the Phins...
Tyler Lewan - long shot to fall, but could happen and being a UM alum....Ross may push for the pick if he does fall.
Zach Martin - Most likely candidate and good fit, though I think he ends up in Baltimore.
C.J. Mosely - The team realizes that they can't go into next season with Wheeler as a starter...if both Martin and Lewan are gone he seems like the most logical choice
XSF - Top guard in the class, very good scheme fit....would be option b if both tackles are gone and the team rates him higher then Mosely
Calvin Poyer - Top Safety, with the mediocre play of Jones and the injury history of Delmas, could provide much needed insurance....could do well in Coyle's Scheme
That's about it....Moses is not a 1st round tackle and only gets drafted is Hickey panics and doesn't feel he can find someone solid in round 2 or 3.
A trade down is possible, but highly unlikely.