I'd spool it for Bantam/828 and/or submini cameras...and GET ON IT. You have less than a year.
Of course, there is the likelihood that the film will all be magenta anyhow, so it might not even be worth it. IME, Kodachome doesn't keep that well unexposed.
If you DO end up spooling it as Bantam film, let me know. I have a Kodak 828 adapter for a view camera that I would love to use with Kodachrome for its last hurrah. It has a cute little 35mm ground glass and all.