There is, by modern early music professional editorial standards, a Right Answer to your question: 6/4. Or 6/2 if you prefer.
No time changes; if there was an indication that a group of notes were syncopated in the original, put an appropriate bracket over them. And it's a song, so only beam things on the same syllable.
None of the Above
No time changes; if there was an indication that a group of notes were syncopated in the original, put an appropriate bracket over them. And it's a song, so only beam things on the same syllable.