Coombs I think it'd probably be as "easy" to set up and run on Digital Ocean as Flarum has been for Peps, the main job would be the proper migration of the content and users, and setting up a sexy OMITT theme etc. That isn't necessarily a small job, I've had a look and it's the usual story where one or two people have hacked a script that helps together, and the rest is up to you.
I like Flarum a lot and advocated it, but as these things tend to go it looks as if the project has slowed down. Discourse has more and bigger corporate users so it probably has a brighter future.
On the other side, a platform that's open enough you can actually get directly at the database seems vaguely important for us, it would be a shame for the OMITT archive to get walled into a closed platform.