I got quite a bit done since my last post! I've got the four (starting) characters pretty much figured out, they each have some class skills which set them apart, and have access to magic. I've run through the entirety of what I have so far, from start game through the boss fight, and I've got probably 15 minutes of game play so far.
I caught a few glaring errors in that run, like a skill which buffs the entire party instead targeting an enemy because I forgot to change an option. In a previous run, before I had fleshed out the skills some, I realized that as built, you pretty much couldn't get to the boss, but I've sorted that out. Resources are still kind of tight, which I think is pretty cool, but I've still got some tinkering and testing to do before I'm happy with it.
Figuring out the monsters was fun too. I ended up scratching a few that I had made because they didn't quite work out and it seemed like it was more work than it would be worth to fix them, when they probably won't be appearing after this initial section anyway.