I guess you have already read all the law, for rest of the queries following is my advise:
If you do not want to live together, it is better to file a divorce case rather than section 9.
You can get the custody of your child by giling an application under guardianship and wards act, in interim relief whereof you can claim the bisitation rights.
You have already perused the judgement of the Hon'ble Apex court and as per which no automatic arrest is their in cases of dowry and confidential, and this was last settled bh the court in the case of arnesh kumar.
Can not tell mathematically as to what maintenance will be fixed by court, it depends from case to case.
You can not file any case but she can any day file FIR or a suit for maintenance.
P.S.: dont rely much on google for legal help
Regars