If you have the 500k and everything you need just apply now. It’s Thailand mate things can change very quickly especially around visas. No point in waiting in my opinion 🙏
DTV is a tourist visa. Whilst it’s not a violation, anything suggesting permanent ties to Thailand could jeapordise your application. Better to use a foreign bank account if possible, in my opinion
I have previously had a Muay Thai ed visa and now have a soft power dtv with Muay Thai. That said I had no current visa when applying for dtv I would imagine this could cause difficulties