You also document the abusive things he has said and done to you. YOu write down as much verbal abuse and physical abuse as you can, and you date them to the best of your knowledge.
Part of you may never want a divorce. But you are right in not taking his crap anymore.
Yes, you should go dark. You were the one that originally encouraged me to do this - and to do it FOR ME. Now I"m reminding you. Get your space! And if he is around all week - GET OUT OF THE HOUSE. Go for walks, the library, friends' houses, movies - anything to get space. You will fell so much better. Go to the library and start documenting everything. You will feel stronger knowing you have your ducks in a row, even if you dont' end up acting on it.