COurt of Justice seeks evidence and proof which are validated such as police case , witness. More often than not few messages , call recording are incidental and authencity gets questioned and cases drag on.
As Mr. Venkat said, The first step is to decide what do you want in life. No return from that decision. Once you decide then make sure atleast a police compalint FIR is raised before leaving and police has proper documentation.
You don't have to puruse 498a, DV and all and can still be mutual after this.
This will help you to push your case even if it contested. Also maintainance later of, if required .
There is no point in chosing justice system to punish someone. But if they deserve you have to use the force of law and make sure it is used properly.
No deed should go unpunished. Especially voilence. If left undone, he may repeat on someone else.