Hey @pbone welcome here!
Feel free to Introduce yourself 
if you’d like.
It sounds like you’ve managed to make a lot of progress on your own! We don’t have an embedded functionality to convert to geojson, but I see a few packages on NPM that might be useful to do so?
Aside from that, here are a few useful resources you might want to consider:
- our object-loader library makes it easy to pull data from Speckle: @speckle/objectloader - npm
- you might be interested in trying Speckle Automate as a solution to automatically create geojson files every time new data is pushed to Speckle (docs)
Once you wrap up your project, I would love to see it in Showcase! - Speckle Community