Actually, I don't think Iowa's line needs to be all that great to win the game. It simply can't play as poorly as it did against Colorado State. Perhaps more like its performance against Kent State. If it can perform on that level and have passing game more in sync, I think that bodes well.
Do I think that is realistic. I'm kind of mixed on that. I don't think Iowa can slow down Maryland's pass rush to quite the extent it did against Kent State. Kent State generated very little in the way of pass rush.
Iowa's passing game showed a great deal of improvement in the Colorado State game in spite of the poor blocking. Hopefully this is a sign that Iowa can get something going in spite of continuing issues with the offensive line.
As part of this, Iowa also needs to get the ball to Goodson in space. That also could incrementally improve with improvement in offensive line play.