DTV will get you 5 years. Financial requirement of 500k baht in any bank account. Won't be locked up. If work online do workcation. Otherwise do soft power route.
Can only apply for it outside of Thailand. The Thai embassies in HCMC and Hanoi process quickly and lower requirements length of bank statement to provide. I'm not familiar with Laos embassy.
Assuming this is for DTV because of the 500k amount.
What embassy? No need to explain unless they ask. The requirement is just that you have it. Some embassies don't even require 3 months; some are fine with just having it there at the time of application.
can if non-Thai clients and non-Thai business. You're allowed to maintain your business while being a tourist. Really depends on the nature of the work. Still probably best not to draw attention to yourself as this is not officially permitted. Bit of a grey area.
maybe has lots of savings, wants to take a year or 2 off. Who knows? Really unclear as he provided incomplete and spare information. Unclear what "solution" he is seeking.
It's a Visa application which will be tied to your passport. So the name needs to match identically to the name in your passport, not any other variations that you may go by. Your passport is applying for the visa 😅