Thanks for the pics. I've flown into Mae Hong Son before (as pax) when Thai operated their 737's out of there a long time ago. It's a great strip, and you can get a great view of the aircraft approaching from a hill located about 3 miles away to the southwest.
BTW, where did you hire the C172 from and what are the rates? Would like to fly there one of these days and possibly go futher south along the border to Mae Sot.