Unique Content Linking To Unique Content

I have been building sites based on the following concept, and I am looking for feedback.

When I post on my blogs, my posts are always about one keyword. The Posts are usually at least 500 words in length, and completely unique and high quality and informative.

I like to promote the post and my "home page" with another unique article about the same keyword. I use a second unique article about that same keyword to submit to ONE of ten or so directories. I use this second unique article to link to the post , and link to my home page.

I usually have my writer churn out two unique articles about the same keyword, one for the blog and one for the backlink

I like to have my sites be 100 percent unique, and I like the links coming to my site to be from content that is 100 percent unique.

I then juice the backlink article with non unique methods. ( spun, web2.0, etc)

My question is, and this is an experience quesition, but, am I gaining anything by using up a unique article to create a backlink?

Should I use spun/plr content for backlinks instead of using a unique article?


"Is my Unique Post, backlinked with uniqe content that is juiced by non unique content" worth the effort and the cost ( extra unique article)

Any advice/input would be appreciated