Dez is going to sign in Dallas, period.
They would maybe sign Hardy OR Suh but the chance of both is insanely low. The chance for just one of them is pretty damn low actually.
I could possibly see Gruley in the first but I consider that a long shot.
G-Beckham isn't getting drafted by Dallas unless he slides way, way down. Like 4th round, which won't happen so, he won't be in Dallas. And that is if Dallas hasn't completely taken him off their board period.
In short, the OP belongs in the science fiction section.