Minecraft wiki entry for Best_enchantments_guide, associated text: Mending
Protection IV or Projectile Protection IV or Blast Protection IV or Fire Protection IV
Feather Falling IV
Unbreaking III
Depth Strider III or Frost Walker II (Depth Strider overall preferred, as it is used in more circumstances)
Soul Speed III (Optional. Consumes extra Durability)
Thorns III (Optional. Consumes extra Durability)