I continued to get Ootay (rb 5/09) her annual Purevax rabies vaccine, not only because it is law here, but because there are lots of bats in my area (they live in the eaves of my house) and rabies is alive and well where I live.
Ootay's last rabies shot, the March before she left us, my vet was hesitant to give it to her, but because of the bats, I insisted. It did not trouble her kidney disease any, it was a third stroke that decided me to send her on to the Bridge.
When discussing flea treatments (I don't use them but was asking about Revolution as I was worried about mosquitoes) my vet said that Revolution should be given to healthy cats only as it is absorbed by the blood stream, differently than things like Frontline plus.
Bottom line is, your vet knows the most about your cat's health and if your vet thinks vaccines and Revolution are okay for your CRF kitty, and you trust your vet, then go with it.