I understand what you are trying to say now.
You are stopping the fishless cycle when it can process x amount of nitrite (x being equal to something less than 5ppm).
That's it.
In my experience, (and I'm sure others here will agree) once it can handle 1 or 2 ppm of nitrite, it is a very short time (a few days maybe) before your tank will have 0 measureable nitrites.
Question: what is the rush to shave a few days off a cycle? When you think you are going to have your fish for years and years (at least if you are maintaining them properly), what difference does a few days make? Patience is one of the keys to successful fishkeeping. If it is that important to have fish right now, use established filter media in the new tank.