I think you should get the cage situated first.
Are you prepared to raise up to 200 offspring? This entails daily (sometimes 2 or 3 times daily) feeding, daily water changes, and daily poop cleaning? You know you've got to buy chemicals to dechlorinate the tank, and food for tiny little hatchlings isn't cheap. And the offspring can't be kept in the adult's tank, and you can't keep the babies concentrated. So you'd have to go buy tons of little containers to keep the babies in, so they won't cannibalize each other. You should probably work with the adults you have first before you start thinking about breeding.