Big Decision

So I am gonna start off by saying my dad hasn’t been the best my whole my life. We differ greatly. He is an alcoholic and he is very racist. He tried committing suicide when I was 5. I walked in and saw the gun to his head. Then when I was 11 he was drinking because he was upset pushed me away and when my mom told him to go apologize, he came into my room and slapped me across the face. Now I am in an interracial relationship and we are planning on getting married and having kids. With everything should I cut him off completely?