I stopped reading this after the first line where it said to make the octaves precisely in tune. That's about three cents off in my book.
330Hz is the high E on a guitar without adjustment. F above it is 371.25Hz. Difference is 41.25Hz. Each cent is .4125Hz. The top E should, after adjustment, then be about 329.5825 Hz.
The bottom E should be 82.5 before adjustment, and the F above it should be 92.8125Hz. Difference is 10.3125 Hz. Cent is 0.103125 Hz. Should be four cents down, or about 0.4125 Hz. That would be 82.0875 Hz.
So if you tune the upper E to the lower E times four, you'd be at 328.35 Hz, when you should really be at 329.5825 Hz. To get a nice stretch, there should be just over one beat per second between those.
Am I being too pedantic?