There is no non-o multi entry visa you get a non- o good for 90 days you get here open a bank account and transfer in 800k baht in your name and season it for 2 months then apply for a year extension or if your embassy still issues income verification you can use that once you get your 1 year extension you apply for a multiple re entry permit
Get a non-o before you come open a bank account and transfer in 800k baht season it for two months and get your 1 year extension and a re entry permit provided your over 50