We are married Canadians, 60+, Like everyone we got 30 days visa free at the airport, we will extend 30 days at immigration in Hua Hin, then around 60 days, we will leave the country to Cambodia, and return a few days later, I assume we can get another 30 day visa free on our return at the BKK airport, and get a 30 day extension again, and repeat 1 more time, we only want/need 6 months total on this trip, we will apply for a retirement visa next year, will we be OK doing this?