Hey there! I'm glad you're interested in using M5Fire and UIFlow in your workshop. It's always best to be prepared for any situation, and having a backup plan in case of no internet connection is smart. I'm sorry to hear that the UIFlow desktop download is only for Windows 10, but I might have a solution for you. Have you tried checking out websites that offer Windows 7 product key options for older computers? I found one website that has a variety of Windows 10 product key options for different devices, and it worked great for me when I upgraded my own computer.