@Keow ******
okay as people pointed out you don't need to show proof of funds to get a 90 day Non-O visa based on marriage from one of the 4 consulates in the US that issue visas now (chicago, new york, los angeles or washington dc)
Once you come in you'd get stamped in for 90 days
Unfortunately for you, you cannot use foreign income to get an extension inside the country once you enter on a Non-O visa. As an american you either bank 400K baht for 2 months before you apply for the year extension OR you transfer IN to the country in a thai bank account in your name only a minimum of 40K baht a month each month every month for the previous 12 months :O
SO that means you have little option to extend your 90 day entry stamp other than the 60 day 'visit thai family' extension. That'd give you 5 months here though all in