With more money than I have I would do what I will do:
Staying in Thailand until my son starts to go to university - most likely in an english speaking country,
then move back to Europe, maybe Southern France near Montpellier, or In Italy's Toskana, or even somewhere in Portugal.
From there frequently travel to places I've never been before, enjoy a 6 months motorbike trip through the US and South America, from time to time a few weeks in Thailand.