A Good Article Marketing Strategy?

Hello everyone, I have been at this IM thing for about a month now.

I have a domain up using a wordpress blog template with the homepage encompassing a relatively general aspect of my niche.

I then created one landing page optimized for a specific keyword phrase.

Next, I write an Ezine Article that is optimized for the same keyword phrase as my landing page and point one of the two links in the resource box to my homepage(using a keyword phrase I want my homepage to rank for as the anchor text) and then the other to my landing page itself (using the keyword phrase optimized in the article and on the landing page as the anchor text).

THEN I social bookmark each Ezine Article as it gets published and build links to each of those articles by posting a slightly spun version of the article to 5 other article directories with the links in the resource box pointing back to the original Ezine Article.

Then rinse and repeat with a new Ezine Article till I get where I want to be in the SERPS.

Does this sound like something that could be effective?

I have 56 ezine articles pointing to my landing page at the moment, all optimized for the same keyword, with the same keyword in the anchor text.

Unfortunately, I do not have any of the valuable keyword research tools at my disposal as I do not have the seed money for them, so I located my keywords using the Google keyword research tool and simply checking competition in quotes.
I dominate when I search for my competition in quotes (my various articles and back links to the articles occupy the top 8 spots, with my actual landing page ranked 13)

However, without quotes, the top spot is occupied by a PR 5 site that is not optimized for the keyword phrase, and my top article is on page 3.

I just want to make sure I am on the right track.

Mind you I cannot afford any of the paid tools for spinning articles or mass article submission. But when I know for a fact what I am doing is working, I will be able to pump out about 10 articles a day on Ezine.

Appreciate any guidance!!