what about tasmania?
jarkari seems pretty hell-bent on going big straight up with animals like elephants and giraffes.
therefore the warrmer the climate obviously the better (giraffes in particular are pretty sensative to cold).
however, i have to honestly say hobart is probably a great location for a small zoo. especially if you can hold a more temperate and or alpine theme. if i was to build a zoo in tassie this is how i would do it and i would actually embrace the prospect of snowfall and build it in the hills close to the city.
red pandas, snow leopards, brown bears, bengal tigers, himalayan tahr, mongolian horses, american bison, deer sp, persian leopards, indian porcupines, puma, guanaco, dhole, japanese and rhesus macaques, golden cats....
all these species are cold-tolerant and available in our zoos and the temperate theme would instantly set the zoo apart.
whilst the zoo may no be able to contibute to quite so many manged breeding programs of a zoo not restricted by this, it can still contribute to a few and manage its other species to just fill its own requirements.