This seems awesome Lisa!
I think you should try to pick not only people who are active on the forum, but also people who are on different stages of making money online.
Maybe have several beginners, several individuals who have are established but aren't making a full-time income yet, and several veterans who are making a comfortable income online. That way you can know who your content is helping the most.
And just wondering: will this membership be a monthly thing or a one-time payment upgrade?
And will there be an affiliate program associated with this?