24 oz of bakers chocolate is a lot. Is it a 5 gallon batch?
How much chocolate are you looking for? Nibs give a rather roasted, chocolate, subtle flavour. If you want chocolate flavour you need to use chocolate powder, paste, or bakers chocolate.
Soaking whole nibs in bourbon, beer, vodka, water, etc. doesn't yield much. It's comparable to soaking whole coffee beans in water for two weeks. It'll turn dark, and taste kind of like coffee, but you won't have coffee.
Ground nibs are chocolate paste, then cocoa powder. If you want actually chocolate, you'll need one of those products, likely dissolved in warm wort/water.