Worry more about the defensive secondary and defensive line. Last time I checked we ran the ball pretty well and couldn't stop the run to save our lives last season. Heath freaking Evans put up over 100 yards on us last season.
I keep bringning this up, but I guess people don't believe me. Our defense actually was tied for 7th in the league for YPC. We only gave up 3.7 per attempt. That is pretty good actually. The run problem was more of a reflection that we could not stay on the field offensively. We gave teams more running attempts than actually giving up yards per attempt.