data entry work for existing products on our site

we have a site in prestashop, and we need to add more combinations to each product on the site. it is basically data entry work, to add extra variations on existing products on our website. if you are familiar with prestashop and combinations, it will be easier as i dont have to teach you much, on what we need. if you are not, then i would have to teach you what is required. basically it is very simple work, but it is repetative, so you have need to have lot of patience and not make mistakes, as this work requires making changes directly on products that are on our website. the work will take between 35 to 50 hours of time, depending how good you are. the work needs to be done in 5 days