Nearly ironed out arc 2's plot beats for my comic - the storyline should start around next May so got plenty of time, but I like to keep ahead especially when I'll be juggling a few POVs for this one. I'm finding though that updating at 3 pages a week is great because you can come up with new stuff on the fly, or identify problems by tackling the story a few chunks at a time. This approach has already led to me adding 6 or so pages of extra material to the first fight for better pacing.
Aside from that, juggling a few more random ideas for stories to do after the main project finishes - one shots/short miniseries/maybe even a few prequel/spinoff chapters.
They say never start with your pet project, and they're right. But I also didn't have any other ideas that were good enough, so I'm still glad I went with it.