I think about re-homing one of my cats daily
What makes you want to get rid of your cat?
I think I own too many cats.
I understand that you want to keep your cats to a minimum, but abandoning a cat that has lived with you isn't right. Love your cats equally and take care of them until they die.
I'm thinking of getting rid of my fat cat because I don't think it will make it.
If you think the heavy cat is going to pass soon, you should keep and try and make it comfortable for the rest of its life.