Remember the ultimate way to add new content, articles and focused information is on a regular, consistent basis.
For example rather than dumping 8 new articles on your site all at once, try to publish them in cycles of one new article each week or even one new article every two or three days.
Make this process a habit and the search engine spiders will be visiting you consistently and crawling your site deeper and you will see some significant benefit by the time you reach 80 to 100 pages of well written content on your site (including some boosts to relevancy.)
Steady consistent updates at regular intervals replicates the effect and benefit of “news” related sites. With news, there are new stories and information constantly being published and updated. Make your Web site literally a buffet for the search engine spiders as well as for your visitors too.