I have a friend who settled for a lot less to get out and keep the peace-things did work out for her. She ended up being eligible for more grants and aid when her kids went to college (that was her biggest concern). Her first step was to get into a smaller, more reasonable place to live. Her advice to me: downsize life right away and don't look back.
Best of luck with your narcissist, and YAY that he is about to lose his overnights!