Like your mock for the most of it.
It's easy to justify Vacarro being selected. Clark will be a UFA and Troy could be a cut next year if he has another injury plagued season. Depth is also a concern. Can't see them not taking a safety in the first three rounds.
I would rather see another option instead of Goodwin. He is fast, but has trouble tracking a deep ball. Stedman Bailey if he's there would be a better option.
Good job though, I like the guys you have listed. Jones and Patterson scare me a little bit, but they do have big potential.
The Steelers may want more of a sure thing at running back. Lattimore may be going to a team that already has an established feature back.But if he is to overcome his injuries, he will be a steal where you have him.