Love marriage Query

I am from Mumbai Suburbs and my Wife is from Uttarakhand. We both are Hindus and different caste. We got Married 5 months back in presence of "my family" in a temple hall in Mumbai. My family members did all arrangements and we got married in presence of 20-25 family members and few friends. Got marriage registered next day in my (Boy Jurisdiction). Got Marriage certificate also. Affidavit was made that she has married with her consent which was also submitted in the registrar office of our tehsil and marriage got registered in presence of witness and we both. Now the problem.... My wife is staying with her parents now. We both want to tell them about marriage and start our life together. She is also frustrated at her residence and telling me to take her from there. Her father is dangerous as he has some big contacts in police and politicians also. My going there to talk to them is not safe. We are planning to elope now. I will bring her her to my house/residence after which we will tell them that we married and now please accept us or let us live our life. What precautions and preparations should we do ? We don't want to go to uttarakhand again before this matter gets settled and they accept us. we don't want to get into police and all matter. 1> Is sending a Notice to her parents and SP of uttarakhand be enough and safe for us ? 2> Both going to my local police station and giving statement will suffice and save us from further trouble ? Need genuine and honest guidance. Thank you.