All OK for you to get free visa exemption. At the moment it is still 60 days , but it will go to 30 days in the near future but it hasn't been announced when .
It's more complicated than a retirement extension . Quite a few more docs required and a home visit . You also have to draw them a Map to your accommodation .
*****
0 Baht seasoned for 2 months in a Thai Bank account with full access to the money .