Since you have to keep beating your record, should go in order of rarity. Start off with piddly butterflies, agrias/emperor and birdwing then move onto the beetles: goliath beetles, then move up to horned atlas/ elephant, cyclomattus, scorpions/tarantulas then to rainbow and giant stag, and then...
I have Mitzi primed to move out if anyone wants her. I would love to exchange her for a cat or a dog. Maybe Kid cat, Rosie, or Kabuki. Or a Benjamin, Lucky or Cookie.