Sounds like a good start. Excited to see what you do during that time. If you need something let me know and I can see what I can do.
Also, Extra Credits released a video that I think might help you in some planning stages before going way too deep since your game is going to be narrative based. Might be worth the watch: https://www.youtube.com/watch?v=YQ44hVeVdEw
I would highly recommend checking some of their videos if you want some tips for game design if you're not already familiar with them.