Spent a little more time with the Colorline 7000. The grey print and the calibration are still stable. I also copied the color settings to other channels and set up war tone and portrait, similar to what Francis did as described in her writeup. This time, when I analyzed the negative I chose about 9 points instead of the fewer probe points I did the first time. This time the exposure time is cut by 3 seconds. The print came out really nice, better than the original print from lab.
I figure this is similar to what the labs print their color prints. They calibrate the print machines, analyze the negative on the fly, then printing. All is automated. The quality may not be optimal, but most are good quality.