The biggest problem there is the amount of taxes you would have to pay if you took out $1 million.
realize your gains in capital gains tax free jurisdiction
Doesn't work if you're an American citizen.
If you hold them for a year, it's 0% if you make less than $72,000 joint or $36,000 single. And this is if you take out $1 million all at once, since your long-term capital gains don't count as income. So it works just fine.