Try this tool:
http://homepage.mac.com/nmonks/Programs/canikeepit.html
Here's a tip. Plan an aquarium around certain fish you know you want to keep and then base the aquarium around those fish. Much easier that way.
For example, with African cichlids, you should only keep other African cichlids. Cichlids from Lake Malawi and Lake Tanganyika should not be mixed. A simple Google of your species should tell you what kind of cichlid it is, where it comes from.
Livebearers can be kept with community fish but they generally require hard water. With mollies and possibly guppies, they really appreciate the addition of marine salt. Some fish like platies prefer cooler water. So adding rams is not recommended, since they like their water very warm and soft - a Google of ram cichlid care will tell you this.
First website:
http://badmanstropicalfish.com/profiles/profile3.html
Temperature: 73ºF to 86ºF (23-30°C)
Second website:
http://www.fishlore.com/aquariummagazine/dec07/blue-ram-cichlid.htm
These cichlids come from the rivers of Venezuela, and Columbia. They require a temperature of 78-85°F (26-30°C) with 80-81°F (27-28°C) being the most acceptable and a pH 5.5 - 7.0. Soft water is best for them but it is known for some of them to adapt well to moderately hard water. Aquarists generally find it is not 'easy' to keep this fish, as they often die soon after purchase. This is because they need well established water to feel comfortable enough in and they can be picky eaters at first.
Third website:
http://www.wetwebmedia.com/FWsubwebindex/rams.htm
Microgeophagus ramirezi (Myers & Harry 1948), the Ram Cichlid. South America; Orinoco River in Venezuela and Columbia. To two and a half inches in length. Cond.s: pH 5-6, dH 5-12, temp. 27-30 C. The most popular South American Dwarf Cichlid, frequently suffering for being kept in inappropriate water quality, setting, and lack of food.
See where I'm going with this? Asking questions is good, but reading and researching is GREAT. It is the recipe for success in this hobby. I wish you would also Google fishless cycling since it troubles me that you think cycling with fish is the way it's done! Very Dark Ages...