Any guidance so as not to have so much fun?
Not sure there's anything to do about it - it depends on Misrad Hapnim policy at the time and how much of a power-trip that the fellow behind the desk is on. Lemaaseh the consulate/embassy is used to it, and they'll put whatever last name you want on the US documentation.
Still - keep every bit of documentation regarding the birth - ten years later, I needed the tissue-paper temporary certificate to prove that I was the father.