As someone who only has minimal knowledge of MCreator, and has no idea how to make Minecraft 3D models, just textures, I would like to ask for the help of the MC modding community!

I would like a mod themed around the Disney show Milo Murphy's Law.

Things I would like included:
New tree: Pistachio tree
New raw material: Pistachios, uncooked. Harvested similarly to cocoa beans for simplicity's sake. Can only be planted on pistachio logs.
New food: Roasted Pistachios (restore 2 hunger), Corn Dogs (restore 6 hunger), Professor Time's Time Chips (restore 2 hunger, regeneration 1 effect for 30 seconds), Orange Soda (gives speed effect for 1 minute)
Passive Mobs: Milo Murphy, Melissa Chase, Zack Underwood, Orton Mahlson
"Ally" Mobs (hostile to hostiles, friendly to player): Vinnie Dakota, Balthazar Cavendish, Diogee, Island Dakotas (variations of Vinnie Dakota)
Hostile Mobs: Pistachions
Boss Mob: King Pistachion, Derek the Pistachion

If needed, I can provide reference images of the characters and items in question!

Thank you if you decide to give it a shot!
For best results, mod might be best in 1.12 or earlier.