If I die first... Widow Notebook

I use QubesOS, Veracrypt, LUKS, Protonmail, Yubikey, Keypass and many such things. In case I die first, my wife would have a hard time to access all this. Now my idea is to keep a second Thinkpad ready, without internet connection, with a LUKS encrypted disk, with a Linux OS, and all the files unencrypted. On there would be a Guide how to open my GrapheneOS phone, how to access my email, etc. Does this sound like a good idea? The Linux Distro would have to be secure, easy to use, and without unneccessary things. Which one would you recommend?