Seattle's biggest weakness is at QB. Outside of that they have a pretty nice team on offense. He can spin it though (dude will make a few throws a game where you're reminded of that) and with their weapons I'd say limiting big plays is the key. Just make them drive the field. They're not great on the ground (overall that OL isn't very good) so if you can sit back in two high and get heat you're in business.
Their defense has improved I think as the season goes on. They're in that lower teen range (so almost upper third) in a lot of metrics. But I think Green Bay's key is just keeping the big plays down and that crowd silent. Given that I'd say your boys should win.