@Charles *********
ok i see, well i guess your highest cost will be a descent health insurance, around 8-10k a month.
If you split your 6m into 20 years, you will have 25k per month(-10k insurance) gives 15k/month.
Its enough for eating thaifood and have some beers but not so much extra, such as travelling etc.
As i said before, it depends on your style of living 👍
Im planning to have 100k/month but i have 3 kids i probably need to support with flight tickets to visit me in Koh Lanta wintertime 😃