Bojack Essay Advice?

So I'm in uni for psychology, and there's an essay assignment for one of my classes where we pick a show, choose a minimum 3 episodes, and break down psychological themes, characters, mental illnesses depicted, how accurately they're shown, etc.

As you can probably gather, Bojack Horseman was one of the options and I'd love love love to make it my topic, but I'm not sure what episodes to base it on?? Or which characters would be most interesting to break down? This show means a lot to me, I've seen it several times through and I realize there are a LOT of troubled characters to choose from lmao any advice??