Add a buffer for risk and uncertainty about the future.

And then consider what role location has on the whole package. If you want proximity to one of the global hubs / power centers, then you're looking at doing this all in a top-tier cost market.

Then you easily push into tens of millions. Breaking a hundred million to super thoroughly check those boxes isn't a stretch.

This is before considering an agenda / passion that you want to see changed in the world. And before any ambitious desires from family members and close friends.