Plot hooks for Dwarves (stay out Halivar)

[Kae'Yoss]

Would Races of Stone be worth picking up?

Just to incorporate that player's character better? Wouldn't say so. If you generally want to learn more about dwarves and gnomes (as well as the new race: Goliaths), their customs, nature, daily routine, and so on, you should definetly take a closer look at the book

Take a look at the reviews for the book. I personally like it.