No need to maintain fund same as Retirement Visa. However if you wish to extend in country Immigration Offices are asking for same paperwork as initial application ie proof of 500k funds. (PS: You are not renewing the visa for 5 years)
A pal does this to Japanese business people and Vietnamese students. Teaches online from Thailand and no Thai students. The companies he works for are Vietnamese and Japanese. He has been told it is fine for a DTV but he has not yet applied.
Employment Prohibited is standard on visas where employment is prohibited in Thailand working for Thai companies or legal entities. It is on Retirement and other visas which do not allow Work Permits to be issued too. Nothing to worry about and is standard.
Visa Agents do not usually deal in twx matters. You need a Thai Accountant with knowledge in this area or one of the larger global tax advisors used to dealing with this. For example this company is what my last company outsourced expat tax matters too. Might be over the top for you but example of the types of org about
Car prices Thai to Thai are generally lower than to foreigners. Last year she brought up the idea of selling to foreigners and adding all the services. I wnt through all the steps about setting up English language websites and marketing etc. She just thought too much hassle for so little extra.
Yeah he had a Thai license for both bikes and cars. Depending on your location TikTok Services in Pattaya are good for this. Nearly everyone I know uses them. They take you to Rayong which is one of the quieter Land Transport Officrs to get it done.