How to distribute keywords on Wordpress blogs for best search volume results?

[johnny_d]

Let's say I have a set of 100 milf niche keywords and 10 of them are category names and the remaining 90 is divided into category names (something like CATEGORY: milf blowjob KEYWORDS: asian milf blowjob, french milf blowjob, milf sucking cock). Category names keywords are, most of the time, the ones with the highest search volume, and the ones that I want to target the most.

What would be the best way to optimize Wordpress blog for these keywords? I know it is good to target one keyword per page (this would be one Wordpress post).

1) Target one of the category keywords in every post (use it in post title, post meta description, text, image names, alt description)?

2) Target descendent keywords in the text of the post only?

3) Target descendent keywords just like category keywords (basically make it the main keyword of the post etc)

I know it might sound a little confusing, but you probably know what I am talking about. What is the best way to go to get the best results in the long run....

Thank you.

[johnny_d]

I am using Yoast Wordpress SEO plugin (with sitemaps), and submit it to Bing and Google, so they know what the category names are etc...

domain-name.com/post-sitemap.xml
domain-name.com/page-sitemap.xml
domain-name.com/category-sitemap.xml