Justin Blackmon isn't top 5 pick material....... He is hardly an Elite prospect. Would have been drafted behind Green and Jones last year, no doubt. Will be a reliable #1 target in the Bigs, but above average at Best. He's no Dez Bryant, i'll say that. Classy character is part of the appeal. We just can't pay a premium for him when RARE talent is available in more pressing areas.
I think you'll see him taken later than expected. Then there'll be a run on Wrs, involving the other 3, in the 15-25 area.
It would be crazy to trade up for Blackmon when you could trade down and get Jeffrey,Floyd, or Wright and also perhaps a shot @ Fleener/Weeden/Foles etc.
Players I'd give other high picks to trade up for:
(the Qb's are obvious)
Richardson ( maybe to move up a few picks )
That's it. Otherwise take BPA at #8