A DTV holder has a maximum stay in Thailand of 365 days, if they apply for a 6 month extension. Your travel plans are not a problem with your visa. The recent clampdown is aimed at people using visa-exempt entries to stay in Thailand long-term. Visa holders are not affected.
Current guidelines would suggest you will be given 7 days emergency extension to get out of Thailand. However, the guidelines also say if you can convince the IO that you are a genuine tourist then 3 entries visa-exempt is OK. Please report back of the outcome.
Anonymous participant I applied in the UK and although they require 3 months bank statements they only require the 500k to be in the last month, so I transferred 500k from my savings. Nothing strange about it.