Hullo Hans.
My suggestions are how I would write it so it sounds smooth to me.

Re the chorus: It does sound "correct" but sounding "correct" is sometimes not enough in a song.
A formal letter from a lawyer may sound "correct" but would you talk or sing the same way?

The phrase "come morning" is an artistic way of saying "when morning comes".

I hope you are not offended by my comments. It is your song so you must write how you feel it.
Regards,
Vic