Looks like a solid plan there. Certainly agreed with the comms percentages. The live chat could be quite awkward, but if we can get a good percentage of the total volunteers attending, it would be useful.
Hero Hub sounds like a good idea - funnily enough I have a project with the same name!
I think the initial goal(s) of the project will be down to you, and we could expand on those and ensure they’re realistic goals, change wording if need be, and so on.
Personally, I think the design needs some word - we’d need to make it a clear UX, simple to navigate and find the resource(s) people want.