http://www.advancednutrients.com/nut...alculator.html

I believe latewood recommends using the +2 bloom - light feeding regimen. There is a guideline for big bud on there. Also, I believe you can follow these directions for your 3 part also. However, if you're going to be up in the 1700+ppm range during flowering and the plants seem to like it, go for it I'd say. Sorry can't be of more help, good luck.