Yes, I would rely on the headers going through. That explanation is more logical, I may drop the one byte now
1000 bytes per day was mentioned during a talk at a recent internet of things meetup in Eindhoven.
I would expect 30 seconds to be quite a lot. At the minimum speed of 150kb/s I would still expect the number time of everything including headers and error correction to be under 5ms per transmission, would that be correct?