For what it's worth. I will say it again - I wouldn't have my R on FB. Not to put a damper on your joy but a couple of things. First - you're still not divorced. Second - She did work with you (I know - you said it's not a problem but...) and Third - Your kids are on FB.
I thought you put it in a private message but you put it as your status. I have told my kids several times - don't live your R on FB. Use the Phone. Or text. Or Email. But FB is for everyone to read. And I honestly don't think you will really want that.
Everything that is said and all photos will be shared with Voldemorte. And I think there are probably things you might not want to share with your kids so early on.
I know, I know - I'm a prude. But I think our lives are just a little too much "out there" with FB and I think you need to be careful.