I'd just ignore the skill positions this year, and focus on line help.
So many "good" linemen this year. LSU, Bama, Oregon, South Carolina, Miss St., Wisconsin, Stanford, and so many other teams have strong lines on both sides of the ball.
The steelers need a thrill and a threat at RB, and a trade would be great.
I'd send Oakland our 3rd round pick for Taiwan Jones. Throw in a 4th rounder if need be.
Then pick 2 OL, and 2 DL.