you're rams are a slight risk to shrimps and possibly your cats. Your ghost cats might take an investigative nip every now and again, but i dont think that will happen at all. An alternative to your rams would be gouramis, such as
Trichogaster Leeri is a great alternative, but will remain in the upper and mddle sections of the tank. If you want movement on the bottom levels, consider corydoras catfish. There are many species to choose from and prefer a group of 3-6 members of a shoal. They're also very fun and easy to care for >>
