

It does make sense. If you are thinking about it as a commercial service, then of course we can offer help. Currently I’m in the process of assembling the core team (see https://lemm.ee/post/58578768 for details). Once we are together, we will have to do market research and see for what kind of services people are willing to pay us. But we will almost certainly have people competent for such work.
If on the other hand you are thinking about your personal services, then I expect that within the co-op there will be plenty of mutual support and learning opportunities for that. But it’s important to remember that we are starting a business, so the first focus is to generate income.
In the first phase I’m going to host us in my social club. TLSC is a private, self hosted and invitation-only instance of Discourse. It’s an experiment in creating something like a private LinkedIn, so should fit the purpose. I want to avoid the overhead of running another service so this can be our forum, unless people bring something better.
Actually my wife and I do self-host a Matrix server too. We use it to chat and call (mostly sharing links and grocery lists), but I don’t think it’s a great platform for organizing communities. Like other similar products it tends to get chaotic and noisy, and it’s very difficult to find what was said even few hours before. Good for real time communication, but not so much for thoughtful work or organizing information.