Assuming I’m gone need to buy a brand new laptop, which wallet do you recommend using? And what about the software updates? After I download a wallet on the laptop cut off all internet going in the laptop?
If you are buying a new laptop, why don't you buy a Ledger Nano S? It is cheaper than a new laptop.
Once you install the wallet in your laptop it cannot EVER be online again.
Unless you have an old laptop to spare, and you are really a tech guy who want to spend countless hours studiying bitcoin and security, there is no reason in doing this way. just buy a ledger nano S. It is cheap and safer.