I wouldn't use a first, nor a second round pick for that matter, on a RB if this trade were to happen. RB's can be had all throughout the draft.
This team needs to build up both lines before they even think about drafting skill position players. We need a NT, DE's, LBers and depth for our new 3-4 defense, as well.
We need to stockpile picks. I'd trade/release Schobel, Kelsay, Whitner, Kyle Williams and any other player that doesn't fit the 34 defense and use these picks on the positions I have mentioned above.
Let's build this team right, this time. From the inside-out. Games are won/lost in the middle of the field and that's where we're at our weakest.