I'm going to be a realist her and say Option 3 may clear up some things for you.
If you've been together that long, you can ask if she'd want to move in. If she does, that would present an opportunity for you to live together without her parents around the corner....then if an opportunity comes up in NJ to move down, take it and sell your house if market conditions are right.
If she declines your offer, you may not be in her long-term plans. I'm not trying to bum you out, but just saying the offer may put your relationship in full prespective for both of you.
As long as you're both willing to be with each other first and foremost, the "where" can come when it makes sense. My wife and I met in another city, married, lived there for 4.5 years prior to moving 200 miles and have been here 5 years. We both sacrificed location and time from family to be together.
Good luck to you, however you choose.