I need to do what's best💪

I need to do what's best for my baby boy & I. Need to step up & get sole custody of my son & get the father of my son out of our lives. Reason being is A. He hasn't even seen his son, nor has done anything for him, has no responsibility. B. I wouldn't trust the father to even be alone with my son. His father has abused me for almost a whole year.. I don't want/need that around my son. He has bad anger issues & will take it out on anybody/anything. I'm not taking that risk.