Samuel, I don't believe a blog is ever too young for this to be the case. From the time you start putting links where others will see them (hopefully next to more well-written ideas) people will start to see your blog. If you already have a few recent articles that are interesting you might get early subscribers; if you're more focused on search engines you'll probably have people clicking on the links, reading a few paragraphs, and leaving. From the time the first real person other than you sees your blog you need something good to keep their attention; since the entire point of search engines is to bring people to your blog that should come first.
You might think that search engines are a much faster way to build traffic but for any terms that have a lot of searches it will take a while to be visible in the results.