MCreator Offline Mode

So, I think I may have found a way to run MCreator offline for a time 

(Background- I teach a Minecraft class using MCreator, and classrooms do not always have wifi or great wifi)

Anyway, the part of MCreator that uses the internet is the Gradle process, which can be configured to run offline, using the directions here: https://chengl.com/gradle-offline-build/ . I did find it was necessary to install MCreator and compile one time while connected to the internet, but after that, all builds compiled.

Has anyone else tried this? Is it a viable solution?