Oh lol. By having all battles completed, I meant all battles that will be present in the next demo, ie. chapter 1. I don't have every battle for the entire game done lol. Sorry for the confusion.
As far as a total release goes, that's hard to say as that mainly depends on work schedule, motivation, and any other unseen issues that may arise in that time. First off, my main bottleneck points are art and dialogue. I'm not the best when it comes to artsy stuff so naturally that takes me a lot longer to get done. I also barely passed English class so... writing isn't really a strong point of mine either lol.
Anyways, if all art and dialogue scripts were done, I'd say I could probably bust out a chapter every month. I estimate the game to be about 4-5 chapters long which will be about 20-30 battles. That being said, the art has a tendency to triple that time as I'll spend an entire day to come up with 1 sprite.
All in all, I'd have to give a rough estimate of 1ish year yet. Shops are the only feature that's really missing at this point aside from small engine optimizations (Unless I've forgotten about something. There are too many features to keep track of in SF1 and 2 lol), so really I'm at the easy point now.

Thanks for your interest! I appreciate the support!