So, you advise against a bet on an individual game then?
No, not at all. I would bet individual games on an individual basis. This 'futures' wagering is a different animal.
If you think the Seahawks will win more than eleven games, I would advise taking any money one is willing to risk on that wager and placing it on Seattle to win the NFCWest, or, alternatively place it on the San Francisco 49ers Under for win totals at better odds than -140.