If the Cardinals drafted Beasley, I would hope they would move him to ILB in base packages. Move him around in sub packages.
My overall opinion is that Fowler and Ray do not have the acceleration to be consistent 10+ sack guys, and Dupree does not have the tanacity to do so. Gregory might not have the physical strength to pressure defenders with a bull rush, and I question Beasley's fit as an edge rusher in a 3-4. I wouldn't move up for any of these guys, just because they all have pretty big question marks, and I'm not sure what teams believe they can "coach up" which is a big part of pass rush development. Also, I believe the gap between this group and Owa, Preston Smith, and Eli Harold is not very big. I know you disagree on Ray, and that is the fun part of the draft, but this is how I see it.