@Josh *********
You will apply for a Non-O Visa based on marriage and, if it's multi-entry, you leave and get stamped back in for 90 days everytime to maintain your visa status. You can get up to 15 months in Thailand from this then, if you have 400k in a Thai account, apply for the 12 month extension. There is also a 60 day for visiting Thai family which could be taken before the 12 month extension.