Hola!
SEO is one of the most important tools for visibility of your site. When a person types specific keywords on Google, they only look at the first page and click on the most relevant links.
It is advisable for you to hire a writer, who has SEO skills. They would be able to place keywords and make suitable titles. Writing relevant content is important. If the article does not have relevant content and it is just stuffed with keywords - it would not entice the target audience. I hired a writer from Contentmart and I did not have to pay a fortune for it! Try it