You will enter on 30 day exempt. Then leave an buy a Non-o which is valid for 90 days. Then for your 1 year extension which can only be purchased in Thailand you will most definitely need 400k in your Thai bank account
You must have 40k paid into your bank account every month for 12 consecutive months on the day you apply for your extension and not on the date your previous extension finishes
Yes but you’ll have to attend all your classes and your gym will report your progress to immigration every 3 months when you extend your visa. Don’t expect to live here long time on an Ed visa without attending classes