I don't know what you guys are talking about, with Nightingale, he is kind, just, and benevolent! <.< >.> >.<
Hmm, I would say 1 mill, as 100k is pretty easy to get, especially if you get lucky.
Anyways, my speculation/analyze of how the experiement (100k) will turn out:
1. The quickest is probably going to be quests -- though this is only if you don't count time 'start-up' time, e.g time it takes to get the pet (Time it takes to get the money to buy the pets, time it takes to breed the pet (from scratch or otherwise, etc)
2. If you count the start up time, then it'll probably be... Exploring. it's simple and once you get the right pets and buildings, you'll be raking it in, especially if you can get the timing right, for selling items/exhibition.
3. Breeding though, would net up the overall highest silver, due to know people like to collect XD.
My Pet Sales page --
Currently have 3 extra Blueprint: Military Academy level 3
#cfddcf -- #d0e7ba