Thank you guys.
I was (and still kind of am) worried that I'm going to be seriously flamed for getting rid of the cats after so long. But there really is no choice in the matter.
My friend Catherine gave me the names of a bunch of foster families around here. I'm keeping those in mind, but I'd rather be giving them to somewhere where I know that they will be a part of the family perminantly - not just until a real home is found for them.