Cool... All u listed is ok...
Ghoul Heart... Duped ammy I guess... What are stats so I can compare it to Mara's?
Enigma or Bramble... It's ur choice, both have useful mods... U decide which one to use, I can just say u won't need Teleport that much on Moo Moo Farms...
Homunculus is a bit better than Boneflame I'd say...
On cows u won't really need Cannot be Frozen but it's ok to use either SoJ+SoJ or SoJ+Raven.
Btw, don't forget to use Corpse Explosion + Amplify Damage and Poison Explosion + Lower Resist... Such a fun...