I'm going to do the massive water change, test for nitrates, see if any more water changes are necessary to get nitrates down to trace levels, add 4ppm ammonia, and once it gets back down to about 2 ppm, I'll plant, the next day it should be at 0, with 0 nitrites, and trace nitrates. Then I'll stock.
Or could I still plant during the last week of the cycle- that way the plants would have some time in the tank before it gets stocked? Or should I just do the way I planned to?