Security strategy:
* All wallets and 2FA passphrases are encrypted on usb devices and split in several places, in bank safes or at least hidden someplace secure.
* Passwords etc apart from the ones you use often and remember saved on an offline PC in an encrypted drive containing a password protected Keepass file. As well as personal information, trading system etc.
* F2A on the phone
So all the devices I would use: An online PC with nothing on it, USB devices with passwords in them, an offline PC with regularly needed passwords on it that can't be remembered, a laptop with nothing on it, a phone with nothing but 2FA on it.
Everything is encrypted ofc, well enough that someone stealing a hard drive can't brute force it within a few weeks. If a hard drive disappears, time to change all passwords, fun!
* Tell every one how you do it.