Like @hugi said, a reasonable course of action would be that you have a look where you’d like to place this content into the current edgeryders.eu platform. There is the Culture Squad category and I’m pretty sure @noemi would welcome engagement from non-European cultural practitioners there. If you’re sure there will be enough content coming in, you can also have your own sub-category.
In both cases, you would register your own domain and point it to that place on edgeryders.eu as a simple URL forwarder. Then, when your community outgrows this solution, you point it to its new webhome. If it does not outgrow it, no harm done, and no effort wasted on installing a forum that stayed empty.
Indeed, once there is enough content to warrant this, we could add an Edgeryders Communities site – for details, see the manual. Moving from a category on edgeryders.eu to your own Communities site (basically a fresh, empty install of the forum) is simple, as everyone involved can keep using the same account. You can find these Communities sites in the top-right menu here. The Babel Between Us site, which you know, is one of them.