time duration of adultry generally takes upto 2 years.
as per my suggestion dnt go for mutual consent divorce as once you get mutual consent divorce she still remain grounds to get alimony and maintenance later on.
if you get divorce on the grounds of adultery you have not to pay a single peny to her but children remain entitled for maintenance.
i hope you are avoidiing adultry case to save your repect and status in society aqnd i appriciate your thinking.
if you are going such way then go for mutual consent divorce through arbitation and make written agreement with her including her affidavit that she is signing this agreement without coercion and any pressure.and mention all terms and make her confess adultry in that agreement and put this condition that this agreement is valid only if your wife will go to court after mutual consent for maintenance or alimony.
feel free to call