Well since I didn't get Odin as a puppy I don't have much puppy info for ya. However, I do want to point out that a lot of bully breed dogs do better on a grain free diet. Which is also handy cuz grain free food is an all life stages food, meaning u don't need special (often marked up) puppy food. I personally feed Acana Regionals Wild Prairie. In my area it sells for around $55 for a 30lb bag. But u can find it online with free shipping from chewy.com if needed.
I also want to say, good job for doin some research ahead of time and welcome to the forum! Post pics when u get ur pup, we'd love to see