Ah, okay. I was mostly considering the smaller and popular species often contained in a majority of NA zoos despite the size.
Yeah for the well-known facilities that trio is certainly not wrong - just doesn't work for a start up.
I was aware about the rhinos, I was just thinking in comparison to other ungulate species and depending on the size of a facility and the budget, they could potentially be an option — though not the best animal to start off with, I see more clearly now.
Ungulates are among the easiest groups to get ahold of - the numerous unaccredited safari parks and hunting ranches provide many species at a reasonable cost. Oryxes, addax, the Tragelaphus, some of the gazelles, Nilgai, bison, banteng, zebras, deer, caprids, they're all pretty easily available with a few exceptions. Even giraffe isn't too hard, but they're more expensive to house.
Meerkats are still AZA-locked in the US, although they are a very common species in the private trade in Europe (so if the zoo was located there, it would be an easy and inexpensive species to start with there).
Given how Europe has cracked down on a lot of invasive species I'm kind of surprised they still allow Meerkat to be kept so readily.