Yep, had an idea for a game and when I read all this stuff I decided to check out Godot again since the last time I did it wasn't in a great state yet. So far it's looking pretty good now!
Be sure to learn how to harness the power of the AnimationPlayer node. You can make function calls and all sorts of property changes at key points of any animation. So, instead of writing code to check if a certain animation has begun and doing something, you can just call a function at 0.0 (start) of that animation. I'm doing this to spawn projectiles from a bow shooting enemy, it works like a charm.