My advise might be different than many others but that is why you asked.
While I personally like making some questions a wiki for the same reasons you note, since this site is so new, many users are having to earn reputation to unlock privileges and if a question is made a wiki they will no longer earn points for their effort. While some will not care, some will. So it is a double edged sword.
If it were my question I would just hold off for a year or so to allow others to join the site and get their input. My thinking is that with the start of each new university semester this site should see an influx of new users. I would also announce a date on which the question will be converted into a wiki. Again this is just my view so feel free to disagree and/or ignore.
Another option that I often do myself is to put such information into the wiki tag. Most people don't think of tags as a wiki page but they should. Check the privileges and you will not see approve tag edits, but approve tag wiki edits.
If you take this route then everyone should be able to edit the info, each edit will still need two approvals to go live. The nice thing about doing it this way is every question with the tag has all of the info just a click away.
Also see: Tags are for more than just questions