A good first step for that would be to document how to build the source code, and what tools to use with that.
Really, for whatever OS project happens to be undertaken, figuring out what milestones to reach is absolutely crucial, and how to keep iterating fast through them without getting too concerned about optimizing X and Y as you pick up on inefficiencies here and there.
If there's anything I can contribute to this thread besides silly rambling about the status quo;
1) Find people who also want to undertake the project and can contribute
2) Figure out what deliverables you can produce on a short timeframe, and quickly iterate towards those goals.
That'll help you scale to something bigger, if you still want to move forward with this project once you start producing bits that you can show off and make (strange and unusual!) people excited about what's next.
