If I were in your spot, today, I would write markdown format documents in a github repo (or comparable service). Focus now on capturing information, you will ne

If I were in your spot, today, I would write markdown format documents in a github repo (or comparable service). Focus now on capturing information, you will never find the perfect solution and it sounds like time is not on your side at the moment. It won't be perfect, but you can start capturing information, you get tracking, you get their security model.