Tails OS and Cryptocurrency Wallet

I currently have a self custody Coinbase wallet that I access through a Chrome browser extension.
What I want is a cold wallet that is detached from the internet.
Since I am a geek, I do not want to purchase a cold wallet like the ones at https://www.guru99.com/best-crypto-cold-wallets.html
Instead, I would like to create a USB wallet, which turns out to be simply a live OS that has a crypto wallet installed.
List of components:

16 GB Flash drive

https://www.balena.io/etcher/

Learn about Tails: https://tails.boum.org/

Download Tails: https://tails.boum.org/install/download/index.en.html

Installing to USB from Windows: https://tails.boum.org/install/windows/index.en.html

Create persistence storage on USB: https://tails.boum.org/doc/first_steps/persistence/index.en.html

Create cryptocurrency wallet: https://www.securitybind.com/make-your-own-cold-storage-usb-crypto-wallet/

Once again BalenaEtcher flashes the USB successfully, but the USB is not bootable. Now I must fix the USB drive, so search for "diskpart" on this blog for instructions.

After cleaning and repartitioning using diskpart, I then reformatted the USB drive through Windows with NTFS as the format.

I will now trying creating a bootable USB drive with https://rufus.ie/en/#google_vignette

After Rufus succesfully flashed the USB drive, I held down the [Shift] key and clicked Windows Restart

Voila! Tails booted from the USB drive. Now on to creating persistence and installing a cryptocurrency wallet.