Question About Unnatural Links

I have a question about the likelihood of Google detecting unnatural links in a scenario I've been contemplating. Maybe I should say "about the likelihood of Google determining that certain links in the scenario are unnatural."

Here's the scenario:

1. Say I have a primary multi-author blog with 10 different categories (category1, category2, etc.), focused on a particular broad niche. On the home page of that blog, I display three different articles at a time (the most recently-added three articles, with the most recently-added article being above the fold and the additional two articles being below the fold). I add 1-3 new articles per day to this primary multi-author blog.

Some of these articles are original, some have already been published elsewhere on the web. All of them are related to the niche. On the home page, I also have a section for links to external websites - which I populate with links to daily news stories related to the niche.

2. When I add a link to that section, I write a short summary (sometimes I use an introductory paragraph from the news story itself, sometimes the meta description for the page, sometimes I write an entirely new summary). I also categorize the links into one or more of the 10 different sitewide categories. Those summaries and the categorization do not appear on the multi-author blog.

3. I create 10 additional blogs, one for each category - category1.com, category2.com, etc. Those 10 additional blogs are populated with content as follows:

a. When I add a link to the primary multi-author blog, a new blurb is automatically created on one or more of the 10 additional blogs (based on the categorization I have assigned to the link on the primary multi-author blog). This new blurb displays the summary of the news story and links to its original, external url.

b. When I add an article to the primary multi-author blog, a new blurb is automatically created on one or more of the 10 additional blogs (based on the categorization I have assigned to the article on the primary multi-author blog). This new blurb displays a summary of the article and links back to its permalink on the primary multi-author blog.

4. When I add a podcast to the multi-author blog (in one or more categories), I add transcripts to the appropriate category blogs (based on the categorization I have assigned to the podcast on the multi-author blog) and link back to the audio version of the podcast on the primary site.

5.For each of the 10 additional blogs, I also add curated content articles manually - gathering additional news, adding our perspective, etc. - the common understanding of curation. Obviously, I link to the sources of the curated content.

So each of the 10 additional blogs, in many ways, become a curated site which has some value to the reader as perhaps they only want to focus on one aspect of the broad niche.

But if I don't do anything special to hide this approach from Google - in other words, I host all the sites with the same hosting company, I don't hide my name as the owner of the domains, I use the same WordPress theme on all the 10 additional blogs (I use Expression Engine for the primary site), etc., etc. (I'm not familiar with everything I might need to think about to hide the approach from Google and I'm not particularly interested in doing so anyway) - will Google see the links back and forth as being unnatural?

Thanks in advance for any thoughts anyone might have - I really appreciate it!