unless your only going to be selling childrens and stimmys and a few lizards i wouldn't bother, run it as a hobby, keep all the money tax free. Not just that but you'll end up spending tens of thousands of dollars getting breeding stock then have to wait 2 or 3 years before their old enough to breed all the while paying off bills because they won't stop coming in and thats before you even get to the enclosures. If you run it as a hobby you can buy and sell whatever you like on the rec licence, run it as a buisness and it limits you to the point where it really wouldn't be financialy viable, Just my opinion, i could be wrong