Sounds like a good plan, but when will you see the $17k level? Do you have any reason why you come up with $17k, which, for now, is impossible to happen?
Maybe it can happen if WW3 starts or another pandemic comes, but for now, it's hard to see this cheap again. It's dreaming of seeing that price again.
When proprieties get destroyed and banks are doing as usual by closing down, you will still be able to access your coins as long as you have access to the internet.
If world war begin, the price of bitcoin may first fall just as it is happening during war, but followed by significant increase as people start seeing the importance of bitcoin during war.
I do not know the exact reason people sell bitcoin during war and the price increase back just in less than a week.