Take your topic list and reduce it to something like:

\r\n
    \r\n
  1. General
    2. \r\n
  2. Experiments
    3. \r\n
  3. Math
    4. \r\n
  4. History
    5. \r\n
  5. Sociology
    6. \r\n
  6. Speculative
    7. \r\n
\r\n

Seriously, that’s all you need to start with; add new fora as your community requires it.

\r\n

Best of luck. I’ll point Matt Nobes (physics dude from K5, all-round good egg) at it.