I believe every country has a reasonable threshold for a balanced account to avoid arousing suspicion from local financial regulatory bodies. Banks may inquire about your occupation and estimate your income, but if the assets disclosed exceed $10 million, I believe it would draw the attention of the IRS.
Gradual withdrawals are a simpler way to steer clear of scrutiny. If you're earning your money legitimately, I think you should be able to explain it well, and there shouldn't be any grounds for legal repercussions during an audit.
If you have 5000 coins from 2011 you may have spent only 5000 to get them.
If you held them till now and want safer investments you almost certainly can prove how you got them back in 2011.
They are worth 130 million. You have zero need to hide your wealth from the government assuming it is a quasi legit country..
Mixing and hiding shit at these levels do not make sense.
Just keep cashing at a steady pace and buy bonds and some stocks. Also you need legal advice at this kind level.