This sounds like a fun and interesting project which I can complete quickly and do very well for you.
I am an award winning writer, highly educated, with three advanced degrees, and virtually straight A grades. Using key words was essential to my research in school and in most of my work over the past twenty years. I have developed organizational programs, graduate degree programs, and done magazine editing.
This type of work is my forte and my bliss.
You will be very pleased with the results.
I do not understand your 2$ per hour paid at the end. Is the project paid per the article or hourly? Thanks.