Request for advice: My wife (50+) and I (49, just turned) are US citizens and want to come to Thailand (Hua Hin) and stay for extended medical treatment and retirement after. I am confused about the best visa choice out of our consulate (Los Angeles, USA) and asking for advice and suggestions.

The Non-Immigrant Type “O” Medical Treatment visa for me with her a dependent seems like it would work well, but then I had another idea…

Instead of dealing with medical appointment letters, can my wife apply for a Non-O Retirement visa and have me as a dependent? One extension gets me to 50, opening up other possibilities (extend again, do two Non-O Retirement visas, other visa options like LTR, etc).

We have no issue with her showing an 800k baht bank balance here, and will transfer that to a Thai bank and then follow up with 65k baht into it each month to eliminate having to maintain a balance later.

My questions:

Is this a good plan, or would you recommend a different route?

The dependent visa is technically the “Non-Immigrant Visa Type O, To stay with non-Thai family residing in Thailand (more than 60 days)”, right?

Do we apply for the dependent visa right after the retirement visa, or do we have to wait for the retirement visa to be approved then apply for the dependent one?

Thanks to this entire group, learned a lot searching and reading here and really appreciate the help!