I'd slightly disagree with Edge being the biggest need. We already know we're a good reg. season team but when we're looking at getting over the post season hump, it hasn't been the defense that has let us down. It's been the interior O line being overmatched against the best teams, so Guard would be my #1 priority (as long as Stanley is back).
I can see the argument that the lack of playoff turnovers has hurt too, so I don't hate the Edge plan either.
The way I see it, we've got about 5 position groups that we should strengthen (Guard, D Line, Edge, Safety, CB), so we're in a great position to just play the draft how it falls and BPA the first 4 picks and then just fills gaps later.