how many Bitcoin do you need to live comfy in event of hyperinflation?
You dont need any. All that you need to fight hyperinflation is access to Bitcoin any moment. As soon as you get hyper inflating currency you change it to Bitcoin. You dont work to be paid in few months time. You want pay immediately. You try to take a loan and buy Bitcoin so you will pay that loan back in hyper inflating currency and will cost you nothing. Hyper inflation is also an opportunity. Just like anything else in life.
Have you lived in a country with hyper inflation before? Then how do you know its possible to get a loan? Most likely banks aren't dumb and will either freeze any loans or they will charge HUGE interest rates. Basically the interest rate will be higher than the hyperinflation. So high that people will not be taking in any loans.
I don't think there are any positive opportunites with inflation. Sure you can over-charge for everything but what is the point since the money will be useless anyways. Hyper inflation and corrupt countries cause alot of hardship and poverty and is never a good thing.