Spend your money on survival neccesities, FRNs won't be worth much when it all goes down. Spend it now on things that will be good to barter. Wheat is going up in price right now and one supplier is completely out so get it soon. A five gallon bucket with diatomaceous earth mixed in the grain is sufficient for storage. For other food, get animals if you live in the country. For that matter, move if you live in the city. Look up what God thinks about cities. Get chickens for eggs, goats for milk, then you have meat (if you get desperate) that doesn't need storage. The masses in Zimbabwe are in bread lines already.
On a positive note, remember the manna in the wilderness. God provides miraculously when need be. Remember the widow that fed Elijah. Her oil never ran dry because she obeyed God rather than hoarding. There is a lesson in that for us.