Need help from the BTC experts- liquidating and moving overseas.

Hi all.

Long story short, I think the US may be a sinking ship and I'd like to learn how to put money into BTC in prep for a move overseas. I would be liquidating real estate assets and then moving the money into crypto.

I'm not looking for anything dodgy or gray area, all taxes will be paid, but its possible I may want to rapidly convert all my liquid assets into BTC, then leave the country should the politics here degrade much further. I realize that for me to have this as an option, I'll need to learn how its actually done and hear input from the people who know.

So, please consider this scenario: You're a political dissident in an oppressive state. You just sold your home, liquidated your retirement accounts, sold your stocks and bonds. You have 3 big 6 figure checks checks from a brokerage, a title company and a bank. You have about 30K in cash assets from a local Craigslist/Facebook Marketplace/Estate sale of your physical belongings. Your objective is to put $700K in checks and $30K cash into BTC.

How is this done, safely without anything gray area or with heightened risk?

I'm sure this has been asked before, links to old threads appreciated. Thanks