You should to go to your local immigration office and cancel you current visa. Tell them what date you are leaving Thailand and they will cancel the visa for that Date. This is to be safe for when you re-enter with your DTV
I applied for DTV last month, Freelance consultant. HCMC, Vietnam. The consulate did request to see examples of my freelance work, and also evidence of freelance work coming up. They did also ask to see my CV, qualifications and professional portfolio. All of which was not a problem for me, and I successful in my application
Before I applied for my DTV I emailed the Thai consulate in HCMC asked for exactly the documents I needed, for Freelance consulting. To my surprise I got a very detailed email back. One of the points was that the minimum 500,000 baht requirement could be in any bank in any currency …..
Anonymous participant one thing missing from your above list, is a letter from your employer addressed to the Royal Thai Consulate General, HCMC, confirming that they approve for you to work remotely in Thailand.