I love that you’re putting so much thought into your proposal, but I do fall into the camp of “maybe do something else.” Unless she is a huge AvGeek then this is a touch cringy. That being said, you know your GF better than anyone, so do whatever you know she would love. Best of luck to you!

ps, I do have to ask, you’re not the FLAIRPORT snow globe guy from A.net from years ago are you??