You'll be able to have a very comfortable retirement with 64k/ year in Thailand. Brandon will have very Sage advice for your Visa questions. I'd recommend renting vs buying, as it will allow you to live in different areas till you find the city/Province you like, or if you're already set on a City, you can rent different places until you find the residence you're most comfortable in that City. Best wishes ๐
The Correct Procedure: Face wall, squat, poop, spray to rinse. Some will then use a bit of liquid soap on the bum, rinse again, pat dry with paper if some sort that you've brought along.