Here's the update:
I'm keeping the German Rams.
I will be buying another tank between 100 and 200 gallons for my 9 Comets that are in the 75 gallon tank, and changing the 75 gallon tank over to the tropical tank. I guess my dream tank will be built sooner than planned.
If anybody has some helpful hints on saving money for both the new tropical setup and the Comet tank and equipment I'll be getting, please let me know! What size tank do I need for 9 Comets?