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.
Definitely do the same yet you know that it is really just right to do so on protecting that 133 Million then you wouldnt really mind about the price.
Just like on what you had said that it is really just normal on verifying everything before proceeding because we are talking big amounts on here.
Doesnt matter if its a Hardwallet, nuclear sheltered or even as simple as USB flash drive as long you could keep your keys then that what all matters.