Hey RM, been awhile. Hope everyone is well.
A. Reduce your suggested content word count to 400 IF a keyword ratio of 1.0 has already been met. I see that the only time one needs greater than 400 is if the ratio isn’t that great. Increasing word count to 600 only increases the chances that the keyword/phrase will be used more. 400 with a 1.0 seems to do well.
B. Utilizing 100 top results for 20 keyword/