^ That is a good idea, please come back here and update us when you have a got full specifications.
All Raspberry Pi model is capable of an air-gapped wallet for BTC which is good to keep safe if you know how to manage it, that sounds good when you know how to start DIY using this Raspberry Pi. There is no safe wallet for me when it touches the internet so it deserves to be called it is a safe place when you have an air-gapped wallet but of course, it is quite risky.