Depends, do you want enough to hire your own army?
Just enough to buy a house?

Although i have some numbers, they do not really add up.

I would say get as much as you are comfortable holding and can waste money on.
Although i know this future is coming, i have no clue when. Many have predicted it would already be here.

Prices seen/calculated are $10k, $20k, $50k a tube.
But, what will be the price of goods at that time?
Food will probably be 10x. Jet skis will probably be, anything you can give me.
Houses are going to drop in price.

The words that seem to ring most true: "those with silver will find themselves with generational wealth"
I suggest just continue stacking as you can.
Afterwords you will wish you bought more.

Silver Shield guy, long ago, calculated 1000 ounces of silver for a house.
I think that is a good amount to shoot for.
But, 100 ounces will probably have you set for your life.