I think if you use good wallet and strong security, your Bitcoin will be safe.
Whatever strong security you have , they are professional they still can do it, the better way double or even triple protection by your mobile, email and by taking backup.
More or less that is possible. I think the better way to do is you have to transfer it into your currency so that whatever may happen it has already a value and you can spend on. Don't wait too much for the growth if you think it's enough then transfer it to your wallet and make use of it before discrepancies may occur. The earlier the better.
I will support you in this regard .no matter how much high security is offered by bitcoins everything in the world of internet is vulnerable to hacking and same is the case with bitcoins it is better to convert your digital currency into fiats as soon as possible you have reached your reckoned price being too much greedy could ultimately be very destructive.
We take precautions like paper wallet, private key wallets, hardware wallet etc.
We buy trezor or keepkey or ledger physical wallets.
This is not enough to be in 100% safe. Becasue our computers are connecting to different internet networks. This makes the computers vulnerable to any hacking attempt.