I'm debating on how to tell my family what I want to happen on the day my son arrives, I understand…

I'm debating on how to tell my family what I want to happen on the day my son arrives, I understand their excitement, I mean I'm already getting the texts and comments on how they want me to call them the moment I go into labor. But, after discussing this with my husband this is what we want.

After our 4th child is born, we want one person to bring our other 3 kids up, & drop them off for a couple hours, so we can properly introduce our 3 kids to their newest sibling, & have family time! We want NO interruptions from family, I will at this time, tell the nurse to allow no visitors in my room at this particular time, just Incase a family member wants to play dumb, & ruin our time. I can almost guarantee when I announce this some one is gonna get their panties in a bunch. That I don't wanna deal with! Anyways! The few I've told, agree and understand! I really don't think this is something that I need to call and speak individually to them about. I thought about a test, but then I don't want them to think it's personal. I'm thinking a Facebook post, cause I also will have to make friends aware of this, that way they see everyone is getting the same treatment. Should i tell them sooner than later? Wait till I'm closer or spill the beans now?