Hello, thanks for your message !
SKevo If you are not experienced with Unix/Linux or don't know how to install Flarum and migrate, but you have a server with SSH access, you can message me at Discord (Kevo#7590) and I will migrate your forum, if I have the time to do so (I have already successfully migrated at around 3 forums and don't ask for anything in return, however supporting me is always very welcome).
That's really nice of you to propose that, but if the idea is to migrate it at some point (I doubt I will have +250 users, but better not take the risk), it would be more easy to just install it on my ftp right now - there is nothing to migrate at the moment, apart from css, extensions (that I can re-install), and some test messages (that I can re-write).
I'm not used to what is asked in the installation docs at all, but I managed to install a phpBB forum without knowing a lot so I suppose I can first try this too, and come back to you if I'm stuck. I keep you updated!