@Renaldo *******
Well, if it's really only 1 year, then maybe look on the thai website in y'r home country if you can fulfill the requirements of a non imm O-A visa. Then you don't have to worry in Thailand besides every 90 days a notification from the Thai imm. Even possible to do that online. You don't need a Thai bank account. Should you want to stay longer you got a 'free year extension' after doing a border hop just before the visa expires. But....you have to have a health insurance for the whole year or the time you want to stay a bit longer on this extension. It's a bit more difficult to get this visa in y'r homecountry, (like a police clearance and health insurance) but then you are ready to go.
If you want to retire then I think best option is the non imm. O (Without 'A') so you can stay 90 days. After e.g. 60 days you can get a year extension but then you need a Thai bank account, 800k฿ in that bank etc. etc.
So for about 1 year only, I think if you can fulfill the requirements for the NON IMM. O-A visa, it's the most hustle free time in Thailand.