Ok so looking at all the mock drafts,( which I know are horse crap) I think it's safe to to say at least 3 QBs, 3 LBs, 2 OTs, 1WR will be gone before Steelers pick, so they should be able to get a stud right off the bat. So here's what they might have to choose from and if there is more than one ,my list is the order I think there draft board will be. 1st RD only.

Evans
Gilbert
Mosley
Dennard
Lee

And if all 5 of those are gone then someone else really slipped.