Hi Michael!
Thank you for reaching out to Ask an Advisor, and my apologies for the slow response.
I love your idea of connecting different organizations and volunteers in the community to strengthen and amplify the work they're already doing. I think you are addressing an issue that contributes to ineffective community work worldwide.
Your idea of starting off with a panel of experts sounds like it could be useful. I would suggest adding a few community members of different ages to your opening panel as well, especially if those who work in the organizations do not live in the same community (which is often the case). In that way you keep the actual beneficiaries, namely the community members, involved from the very start - true community-engaged work! In fact, it may even be useful to consult with a few community members on your plans and the best way to advertise your events - after all, these are the people who have the greatest stake in the success of your intervention.
There are a number of materials available on this website which can assist you in getting the project off the ground, in particular the toolkits on Creating and maintaining partnerships, Assessing community needs and resources, Analyzing problems and goals, and Increasing participation and membership.
I hope this helps!
Elliott