Article Writing - 400 words - Able To Be Submitted To EzineArticles

I have a list of around 55 articles that I need to have written. I would like to break them down into groups of 30 and then another group of 25. The articles need to be 400 words and able to be submitted to EzineArticles. The first set of articles are all themed in the home business market. The second set are more gear towards travel. The articles need to be well researched and you will also need to insert specific keywords into each article. I'll supply the main and supporting keywords, naturally. I need pricing for each of the sets as I would like to get the first set going this week.