Seeking Tips for Launch Plan of Customer Community

Hi friends- QQ: has anyone built a launch plan for a customer community? I'm proposing a phased launch plan for our new customer community (we're using gainsight cc), starting with a small group of select customers who will be our founding members, and then slowly rolling out to all customers. Curious if anyone has suggestions on the best way to present/organize this? If you're open, I'd love to see an example launch plan or template just to see how others have structured this.