Good question.......I don't really know how many eggs each female will carry. However, if you wind up with too many shrimp, you could always try and trade some in at the LFS. These shrimp aren't anywhere near as cheap as ghost shrimp and you might be able to build up a store credit or something to that effect if your LFS is willing. But, walk before you run. See how successful you are with breeding them before you start wondering what to with offspring that you don't have yet. As for putting them in with other fish.....the adults will be fine, providing that their fish roomies aren't too big. The young might be eaten, though. If you intend to breed them, either keep them in a shrimp only tank or provide them with lots of cover and hiding places.