60 day vise free then go to imagration for an extension 30 days 1900 bht now your 90 days in and you can do a border run and re enter for another 60 days
I would do this before you decide on retirement visa assuming you are 50 + i would definitely spend some time in Vietnam as well way better standard at a lower price
Also north and northeast thailand has horrible are quality in the burning season head for rayong province much more to offer in my opinion im also a Canadian fleeing a crumbling country 😀