Stop thinking about channels.

Decide exactly who you want there. Not just "people who can pay" but the exact types of people YOU decide should be there.

The quality and compatibility of your clients will determine how much the other clients like being there and how long they will stay. (this is important).

Once you know the right client-type THEN you can start looking at channels.

Your target market determines the channels you use to reach them, not the other way around.