Crabtree IMO is a risk at #4. Most receivers are.
That said, if there's a team that can take a chance, it's Seattle.
Stable franchise, good fanbase, right offence for Crabtree.
Seattle is not Cincy, Arizona (before 2009), Oakland or another nobody. They have been a damn solid organization.
I'm not crazy about Jim Mora as their new coach though. I think they could have done better.