Magento Product input 500 items with Product import and Export (Ver3)

We are looking for highly experienced Magento programmer / Data entry person.. So here is what we am looking to do: 1. Product input 500 items into Magento Computer related store KaiduWeb dot com. 2. Magento supplied data for input will be limited to the following: UPC code , Cost of product, Selling prices, Categories , and a web link to see the product and gather other information needed from various websites for input i.e. pictures, descriptions ect. 3. Products may be input manually in Magento for the first 50 items or via an import and export custom module or using the import and export feature in Magento. 4. After the first 50 products the remaining products should be completed only via the import / export method. 5. We at KaiduWeb dot com will do the import and export after 250 products have been completed by yourself. 6. An individual Magento programmer / Data entry person preferred.(NO COMPANYS) 7. Person must be available more than 4 hrs a day! 8. Our every question / email must be answered within 1Hr during working hrs. We are hopeful we can find that 1 special Magento programmer / Data entry person here at GAF! We would like to hire for a permanent position in our company in the future. We will also be adding in access of 5000 products. Although this project is only for 500 products. Payment will be made as follows: $ 30.00 after the first 50 products are complete 50% after 250 products 75% after400 products final payment after 500 products and project is complete. Good luck to all bidding. We want to award the project within 2 days and start work by March 23, 2009