In my experience, it is hard to tell what will happen. But things will happen. Some knuckleheads will think you have lost your marbles even though there was no prior indication they would be that way. Telling your kids depends on their age. Assume they will tell their friends even if you encourage them not to. And forcing them to keep a secret is really not good parenting when the secret is about a parent's "weird" behavior.
When I came out I wanted to tell everyone, but I didn't. I am sure some friends have figured it out. One friend made an issue of it, but that is OK because a friend that will do that maybe isn't really a good friend. I did tell more than I should have. Pink fog will cause you to think that way - don't do it.
I suggest that you make a list of those who REALLY need to know and gently spill the beans to them only with an explanation. See how it goes before going further. Always be selective about who you actually tell, but recognize that they will tell others and some will be people who are also your friend. You are planting a few seeds and not the whole flower bed. Don't let the Pink Fog guide your coming out - be more thoughtful about the revelation. It really is serious business to tell others about something that has been a secret.