Mutt,
I replied before but I guess the computer misfired.
I did a PPL in 30 days exactly when I was actively CFI'ing. It was a push. I don't recommend. There are too many variables such as wx, maint on a/c and student ability. To sign up for a course with lofty goals and not being able to realize them can only lead to dissapointment.
NAC is right in the 6 week window.
By the way, how did things work out in the "Big D"?