Which DL and LB Prospects Are a Good Fit for Our New Defense? And Which Ones Are Not?

I think this is a good question. And I am just trying to learn. In scheme, it appears we will have a new defense going forward, though there is a bit of educated guessing in projecting what exactly that defense will look like and what variations there will be. There are a number of defensive linemen and linebackers in this draft who will be picked from, say, five to 22. Of the defensive linemen and linebackers in this draft, which ones seem to "fit" what we will be trying to do on defense and which ones will not? For example, I like defensive tackle Walter Nolen, though nine seems too high for him. But does he fit a 3-4 defense?
Walter Nolen would probably be a DE in a 3-4.