How not to leave people out for a birthday party?

So I'm having my 16th birthday soon and I am not into parties because I don't want to leave people out. I have a lot of friends and I never have birthdays because there's too many people. But this is my 16th birthday and I don't know how to approach it. The biggest issue is that all of my friends are in different groups. I don't really want to invite like 40 people over. The other thing is that I have a lot of friends that I've grown distant from, but I still feel obligated to invite them because they're family friends, team members, etc. Should I try to keep it small and hope everything goes well, or should I just have a BBQ in my backyard and ask people to stop in if they want?

How not to leave people out for a birthday party?
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