A household with one or two children can be fairly calm. A family with 13 children can be chaotic 99% of the time. It's probably the same way with cats! With one kitty, you don't have to worry how the cat will get along with another kitty! Two kitties -- well, if you get them together, they usually get along pretty good from the start. Adding another cat later -- well, it can go well or it can go horribly bad! When it goes horribly bad, it takes time and lots of patience to bring the balance and harmony back. Are you willing to put in the time? Do you have enough hair to pull out so that nobody can tell?
Seriously -- once you have a happy balance with two cats, I don't know that it's worth it to add a third! You have less time to spend with each cat. You have two kitties who are incredibly close and happy and now you bring in an alien cat -- 2 cats against one. I personally would not chance it, but that's just me! I love it when people can open up their hearts and homes to multiple cats, however .... I definitely prefer rescues rather than breeders who probably already have a long list of potential buyers. I feel as if I rescued Raiden from an owner who didn't really care about him. I would never have paid money for a bengal.
I have an app on my iPad called Neko Atsume and I have 48 virtual cats there that I have to take care of and feed eery few hours. That's plenty of cats for me. They don't want to go outside for a walk, they don't wake me up during the night, they don't cry and cry for no reason! In fact, they make no sound at all. And, best of all, I don't need dozens of litter boxes.