Good luck to you Geko. Just be prepared to invest a lot of time, money and effort into this hobby LONG before you see your first red cent of profit and that's if you EVER see a profit. I'm sure you will enjoy it though, profit or no profit because like it's been said before, it's all about the animals and you say you love animals.
My advice to you would be to learn as much as you can about all snakes. It takes a lot of reading and learning. You will need to visit all of the top breederís sites and read their articles and care sheets, read all of the forums to learn from other people's successes and mistakes, ask a lot of questions and most of all.... be prepared to fail. This isn't math. You can dream up all of the figures you want but these are animals, not numbers. They could die, escape, get sick, not breed, not sell... who knows? You'll need a lot of experience, good contacts and a very good reputation.... not to mention top notch animals.
Anyway, grab yourself an adult pair of Kings or Corns to gain some valuable experience right away. Learn to breed, incubate, feed babies and sell them....
Again, good luck to you. It will be fun even if it's not profitable. Work with animals that you enjoy and you canít go wrong....