When is the best time to apply for a 1-year extension for a multi-entry Non-O visa in Koh Samui based on marriage status?

The user inquires about the appropriate timing to apply for a 1-year extension of their multi-entry Non-O visa, based on marriage, before their admitted until date of September 26, 2017. They mention having deposited 400,000 baht in their bank account and are confused about whether to apply 45, 30, or 7 days prior to their admission stamp. Respondents suggest that visiting 30 days before the stamp is ideal, noting the importance of having the bank deposit seasoned by that time.