2000 BTC is roughly equivalent to around 134 million bucks which is why I would prefer the best option available even if meant spending a million bucks to successfully store the remaining 133 million bucks.
If nuclear sheltered vaults are the best option, I would obviously store all my BTC though I would research them thoroughly beforehand.
But the issue is the centralization aspect of it, would you trust your bank with 134 millions dollars? If the answer is no then what makes that service deserving of that kind of trust? To me it seems like the first place any government hungry for funds will go to try to steal anything that is valuable there.
They must do that, the government is sucking people's money through banks. I can challenge and say that no bank in the world can repay all the money of the people at once even after liquidating all their movable and immovable property. All the banks in the world are bankrupt, they know that not all people want to get their money back together and they are taking advantage of this opportunity to satisfy their hunger.