I'm so close to having a working OStatus node now. I spent today writing nicer styles and implementing live updates. It'll be exciting once I can actually post something from my own little home :D
If you'd like to check out where it's at, you can see my running instance here: https://don.fknsrs.biz/
And the code is here: https://github.com/deoxxa/don
The whole thing is eating 0% cpu at idle, and very little when actively working. Quite happy so far.