@Kool ******
like I said I plan on traveling anyways so the cost of leaving the country every 90 days is not a factor since it is a cost I plan on incurring anyways.
The fee to transfer 400k baht using wise is close to 80 USD (2,700 baht). The difference between the fee for the extension and the visa is 3,100 baht, so just the money I save in Wise fees almost pays for that. I don't pay ANY fees to withdraw my money from an ATM for living expenses because schwab reimburses all fees.
So based on my situation and plans to travel anyway the cost is a wash, which brings it back to having that 400k work for me or sit in an account that earns no money for a year every year. Even if I assume only a 6% return that's 24,000 baht. If one considers compounding interest over several years it adds up. Even if for some reason it is zero percent I still haven't lost anything financially.
As far as wasted time or days lost I'm retired and want to travel. I didn't retire at 42 because I'm financially illiterate. I put WAY more thought and calculations into my finances than the average person. I'll try this for a year or several and if I find the 90 days is more frequent than what I want to travel then I'll switch back.