My wife abuses alcohol and drugs (marijuana) and has a history of substance abuse, three DUIs, jail time, mother and father are alcoholics. She recognizes she has a drinking problem but feels she has it under control (she does not). She also doesn't see a problem with smoking marijuana and often leaves evidence in plain view around the house where our 2-year-old daughter can see it. She also smokes in the house several times a day while our daughter is in the house. I want to know if my chances of winning sole custody are significantly increased by these circumstances.