It is very clear what is required for a non O based on marriage and also very clear what is required for subsequent 12month extension.
The OP has better options than your other earlier post .
"Visa exempt , extension to visa exempt (1900 baht) , None O (2000 baht) extension to non O (1900) so total 6000 baht , and you get 5 months
Am I correct?" ..
Possible but foolish option.