I would play Man-to-man as you to make your defence more balanced, because his offence seems to be. And your ratings should still be better in both OD and ID than his offense.
Focus on outside defense should only be if you are up against an opponent, where this is crucial to stop him. Otherwise you might have problems if he decides to go inside.
And in a game like this, what you want to do is stay out of problems, because then you should win (except if Random Factor kicks in).