Find a vet you trust and talk to them about what your cats need.

Personally, I don't vaccinate for my cats for anything anymore. They all had their shots brought up to date when they first got here and once after that. They don't go outside and they have no contact with other cats. Rabies is not required here for cats. I take them to the vet whenever I think they need to go. I've talked to my vet about this and he's comfortable with me deciding when they need to come in. I'm a little obsessive anyway so if I have the tiniest feeling that something is wrong, they get checked out.