Content writing on Local Search Marketing

I'm wanting four articles, of about 500 hundred words long, writing about the benefits of local search marketing for small businesses. Keyword should be placed once in the article title, once in the first paragraph, once near the middle of the article and once towards the end of the article. Keyword prominence should be between 50% and 60%, Article content should deliver the promise of the title. Keyword: "Local Search Marketing" Keyword Density: No more than 2% Keyword Prominence: Between 50% and 60% I can make available a free program to determine the keyword prominence. this is the program I can make available [login to view URL] cheers