Forget both options...
Neither one is good for you...the New Non O retiree visa also has an insurance requirement which you cannot meet.
Thanks to Ben ...a better option:
Get a Non O Married to Thai visa
Gives you 90 days on arrival
Then do the transfer of 400,000 and apply for the one year extension based on marriage to Thai.
If added time was needed
You can get a 60 days family visit extension for 1,900 Thai baht from Thai Immigration.
Get the government sponsored COVID ONLY policy...
Issued to age 100.
Get three months...
For UK citizen is 12,160 Thai baht....is one option re insurance
But better yet...FLY EMIRATES ON A ONE YEAR RETURN TICKET
FREE HEALTH INSURANCE😊
You then can rejoin your Thai wife soon.
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