@Roger *******
, this is like throwing a spanner in works BUT
To be completely honest, I think you should take
@Rob***
's EXCELLENT advice and go to the thai consulate in Savannakhet Lao and get a year-long, multi-entry Non-Immigrant Type O visa based on marriage for 5000baht.
You can do that without the need to show ANY proof of funds (because that consulate doesn't require it).
On that visa you will get stamped in for 90 days, then when that runs down you go to a border, stamp out of thailand, stamp in&out of another country and stamp right back into thailand for a new 90 day stamp.
On that one year visa you can get 15 months of stay in country (in 90 day increments).