Coming out

I think we should tell our parents about us before the babies are born all three of us that is. They have a right to know they are gonna be grandparents after all. if you agree who should we come out to first? your parents Tanya? or mine and Jay's parents? I think we should maybe come out to your parent's first Tanya because you aren't related to your two fiances, if we do come out as an threesome partly incestous poly couple. Then after we ask your parents not to tell mine and Jay's parents in advance and we go and tell them. What do you guys say should we tell them?