@Sean ********
, unless you're going to apply for a yearly extension of stay at your immigration office INSIDE the country after you get the 90 day single entry Non-O visa based on marriage by meeting the proof of funds (either banking 400K baht in a thai bank in your name only for 2 months before you apply OR by transferring IN to a thai bank account in your name only a minimum of 40K baht each month every month for the previous 12 months) there is no advantage to getting that 90 day single entry Non-O visa.
You are way better off going to the thai consulates in Savannakhet Lao or Ho Chi Minh CIty Vietnam and getting a year-long, multi-entry Non-O that you are not required to show proof of funds on.