You need to consider why the visa was created not just the conditions for yourself. The concept was created originally for digital nomads there were so many staying in Thailand so it made life easy for them and created a boost to Thai economy. But it was launched with soft power options not to help the person coming to Thailand but the industry that they wished it support Muay Thai,cooking class and also medical treatment including dental. This DTV has exceeded expectations for Thailand's economy. So do you think Thailand government is happy of course do you think they will stop DTV don't think so. It only immagration officers that are pissed off because it is stopping then receiving kick backs when people do border runs for 60 days.
Vientiane will request an interview you also must go and pay in person. Just put 14 days from your application it doesn't matter really you leave when you get your visa l stayed an extra week
It's a multi entry go and come as you please for 5 years read the conditions of your visa. You should know this information it's not rocket science FFS
You are free to travel as you want. But be aware if they ask you to attend interview you will have to return and risk being asked for your passport which the embassy will see you did not stay there. Your risk it's your money so do what you like