And a residual income of around a million won a week.

A million won per week?

I've never been to Thailand, but from my understanding of the cost of living in that area, you could do very well with that same residual income spread out over an entire month, or even over 2.
I would feel very nervous with a nest egg of only $50k. If you ever end up being hospitalized, or needing some serious dental work, then a good chunk of it would be gone. Also, you wouldn't be able to travel much, or buy a car, or...
I think Rusty's idea is pretty good: if you own your own house, you then have a massive amount of money that you can draw on in an emergency (mortgaging it), and property in the right location is always a good long term investment.
Also, you could subdivide it, rent it out, move to Thailand, and live off of
that income more or less indefinitely. This would work even better if you have somebody in the area that you could trust to take care of maintenance issues, rent collection etc.