Well, I found pretty good one, which could even replace reddit. It would be good for start, because there's no separate sections, just categories.
https://www.discourse.org/
This is the link, the best feature of it is that it's got Real-time updates, so you could just leave it open and know if chapter is being released or if someone answered some posts. Mods aren't that hard to find. I'm not saying forum is neccessary, but it would be nice to have it for sure. Here's good example how Discourse forum may look:
https://forums.sekaiproject.com/
So, yeah, think about it.