Much of the FAQ will be somewhat boilerplate: “be nice,” “how to create an account,” “how to ask questions” — it’s all pretty static. Even the sections about “what kind of questions should I (not) ask here?” comes primarily from the Definition phase of Area 51.
But the questions you want to discuss in meta are those issues specific to your site that need to be mentioned in the FAQ. It took almost a year to figure out the list of “we want these sort of questions” and “we don’t want these sort of questions” on earlier sites. Area 51 gave you a head start but we should also be working out other FAQ-related issues specific to our topic and our community.
See the FAQs of established StackExchange 2.0 sites to see what the FAQ needs to contain and look how they are forming the FAQ on other StackExchange 2.0 beta sites to get some inspiration through examples.