Divorcing A Narcissist

I am new to this site. I recently left my N husband after he D & D'd my 18 year old daughter after 5 years of marriage. I am his 3rd wife (RED FLAG). It's one thing to treat me badly but I couldn't stand by and watch him break down my own daughter's spirit. So, I left our beautiful home and my "comfortable" lifestyle & filed for divorce. I don't think he saw it coming. Now, I am wondering what I am in for with divorcing & taking some of the N's (& mine) material possesions & the sole leverage he has always used to get his women. He hates it & is fighting giving me anything but I am letting my attorney take charge. Any advice on how to stay strong & get what is fair in a divorce with a narc? Because part of me wants to say goodbye, I don't want a thing, I will be fine, but then I have worked hard, made a good living, contributed, and lived through hell the last 5 years. BTW, all 3 of his wives, same stories, same endings, we all left him & filed for divorce stating the same reason....do they (narcs)ever step back and ask, hey, wait a minute, deja vu, why is this happening again, why did I just go through this same thing 5-8 yrs ago, maybe it's true what they are saying??
And how do the families and "friends" of narcs not judge this guy when his same story keeps playing over and over, he uses the same excuses, "it was them, they were crazy, her kids broke us up, she wanted to run away & be free". At some point, it's like a recurrent nightmare. I just want to be done so I can undo this craziness.
Any divorce advice/suggestions is appreciated.