i get different stories from different people. Some say can just keep doing 90 day tourist visa, and a week before 90 days up, go cross border to different country, then come back, register for another 90 days. I have done this once, so am on 2nd 90 day tourist visa now. Others say when you wrote...
I am going to see during this 90 days if i have enough of a life here to stay more, if i do, i will do cross border again and back, if not will travel to another country to check it out..