I know scheme really doesn't matter much these days, as teams play nickel the majority of the time, but it's time for a 3-4 front for their base defense. It was originally designed to be able to defend the run better and is much easier to find players for that scheme. Add in the likes of BB, Vrabel, Saleh all possible candidates, use the 3-4 scheme.
-You would have Parsons, Kneeland as your OLB's. This is really Parsons true position, where Kneeland fits as that run SOLB like a Spenser.
-DL would have a big 3T like a Graham, a NT (Mazi) and a 5T which I think Gholston could play. I would also draft a 1T DT.
-As for the inside linebackers, Overshown/Marist and add another big linebacker.