That is a wise way to go: "rent and explore the country for a year or two before buying"
I owned some land in downtown Ajijic from 1996 until 2002, was thinking on retiring there. Got scared on the water situation there (Lake Chapala was becoming dust bowl), and sold at a nice profit. In last 2 years, they finally solved the Lake Chapala water problem (dam built I believe) and now Lake Chapala is about up to historic levels.