Getting through the first half at 4-4 should be good enough to win the NFC West.
I think if the last few years have taught us anything, it's that there's no reason to panic when the Seattle Seahawks get off to a slow start. At least, not as much panic as when they get off to a horrible finish, but let's focus on the macro instead of the micro today.
In 2012, they were 6-5 before winning their last five games of the year in blowout fashion. In their Super Bowl-winning 2013 season, the Seahawks were pretty much the best team wire-to-wire and nobody is going to argue that they're playing as good now as they did then.