Thanks for sharing this @broncnutz, this is a matter that is hugely important, especially for people with a lot of money in this industry.

I think that the safest way (in my opinion) is to either use and encrypted USB key, or to use a raspberry pi with a lot of encryptions that is kept offline. I also think that your method is a great way to stay secure.

Thank you for the great posts that you do! Currently, I am working on a porject called the Steemit Success Initiative, which is a project that aims to grow and develop Steemit as a platform in multiple ways. If you are interested in learning more, I have a presentation that I can send you on Steemit Chat, or you can check out the latest posts on my page. Thanks again for sharing, and best of luck!