Article or blog ...???

FOR POPULARISING your blog the more number of quality article pages will be more important>

I am agreed with your decision and also I have not any suggestion for giving you and also your idea for the project is much beneficial for knowing and also for doing something new to project. I like and much impressed.

I don't even get your question but let me assume you are trying to ask about the importance of articles in blogs. The more quality article you have in your blog, the more visitors you will attract and gain traffic.

I think article submission is more important than blog in a SEO Organisation as when you submit the article to an article site and market the article on social media sites, the links will be going to the article site then it is beneficial for the company.

Use fresh content in article pages in Blog site...

First depend on your design and next step is content writing and unique article.

Both are effective for a Google SERP, but when you publish the blogs or article content should be unique. the content is very much important for SEO. inside the content if you optimize your targeted keywords it will get more effective to Google search result.

I think blog and article is a good platform interms of gaining benefits in PR and traffic. But blogging is more easy to do than articles since posting a blog does not require for approval compared on submitting an article to article directories, sometimes it takes 2-3 days waiting for approval although there are some article sites that have an auto approved.

Wrote an article first, then waiting until your article was recruit by google.
Now you can do some links in the article...
Sorry, my English is not very well, hehe