No issue whatsoever. Pet documents are completely separate from (human) immigration documents (e.g. visas). For pets you deal with the Veterinary Authority and customs.
I’ve brought in my cat twice, both times on a TR60 visa. When I passed immigration, they didn’t even notice my cat and I didn’t mention her. After passing through immigration you go to the veterinary office (located in the baggage claim area) to do the ’immigration’ process for your pets.
I shipped a container on no visa (eventually entered the country on a 60-day STV and by the time the container arrived had switched to ED). This was last year. Did not have to pay duty. I suggest you find another moving company 😉
You have to be 20 for DTV and how are you going to support yourself on $400 a month? Thailand may be cheaper than your country (USA I’m guessing?), but it’s not THAT cheap 😏
Depending on how much money you have in the bank, LTR could be a suitable option for you, or otherwise the Elite visa, although it’s grossly overpriced compared to DTV