Contested divorce by husband and legal rights of property

Hi Advocates, I am 45 years Hindu married since 2001. I am planning to file a contested divorce because despite of best try we are not able live together, she is a short tempered lady and hardly talked to me properly, very abusive, last 2/3 years mostly she refused to have marital intercourses with me. After her father death her mother started living with us and recently during a oral fight between me and wife she physically abused me in front of children ( son 18 plus years and daughter 10years). They always threaten to me to leave the house otherwise they will register FIR against me and force me to leave my house. She is not ready for mutual divorce but not ready to live with me. According to my wife I do not do my family duties, few times during our heated arguments I used few foul language. She is earning well in her own business, although generally show less income in Income tax. Till now I spend all the expenses of our child educations, insurances, medical expenses, electricity,water, gas, majority of household expenses etc. I have 3 house properties - Two in joint name where all the financial contributions are done by me including down payments and home loan EMIs. 1 house propery in single name 1]What can I expect if I file a contested divorce ? 2] who will gets the property rights 3] Child custody and other expenses 4] how can I take legal protection from the threats of FIR ( without of any valid grounds) 5] approximately home much money and time required for the settlements of legal cases Thanks in advance for your valuable feedbacks and suggestions