Working with your favorites is fine having a business and making a profit (original question.) will require to know the market and invest smartly in animals.....all of them.
Bees, Super Pastels are hard to move and usually by the time you sell them if you do (the market is flooded) you will have spent more in overhead than what the animal will sell for.
If you want to start a busness (original question) you will need to make a major investment in much higher end animals.