How about their respective breeders? Have you tried contacting them? They might be able to temporarily house them and help you.
How long are we talking about here? I mean if it would be couple of years, I would honestly think placing them out would be the most practical option. And should you place them out I would suggest you have them spayed/ neutered, as otherwise could just bring them to some sort of abuse. Should you consider this option maybe contact me privately, I may refer to a person who I know could help you.