@Caleb *******
, you will get stamped in for 90 days when you arrive and then you have two choices for an extension on it
A year long extension of stay by showing 400K baht in a bank for 60 days before you apply
OR
a 60 day extension that you can get without financial requirements by showing the marriage certificate, your wife's thai i/d and her house book
All extensions of stay cost the same amount 1900baht no matter the length of time they're issued for