Locke that's great that you came up with your own. Use what works.
I use the scale given to me by my nutritional therapist. I believe it's the one from the IE book.
1. Famished, Irritable
2. Very hungry
4. Slight hunger
6. Appetite goes away
9. Overly full, stuffed
10. Sick, discomfort
I eat when I'm at a 2-3 and eat all the way to an 8.
"If you pay attention to when you are hungry, what your body wants, what you are eating, when you've had enough, you end the obsession because obsession and awareness cannot coexist." - Geneen Roth