For evidcomm ONLY

I need to build a web-based platform(like Magmi, but customized to my needs) which will analyse my data in the csv worksheet then make the correct import to Magento database. The csv file will be in similar format(but different column) as Magmi's, column name may not be the same, and sometimes if column A is empty you need to get from column B. Here are some points to note. - be sure you have experiences using Magmi - get all the pictures from the links, rename them and save to my hosting directory. - I will be using the extension "Color Swatch Pro" (by Amasty). Make sure all pictures fetched workable on this extension. - the prices fetched needed to be adjusted (simply +-*/) before importing to Magento database each time. - I will need an other function listing all the products of each category from the database allowing me to delete them(the whole product data including all its pictures) directly and easily. *If you are able to modify base on Magmi(in order to achieve a lower cost and save time), let me know. Additional functions are mentioned as the attached file provided by evidcomm, plus all functions mentioned in our text conversation in freelancer.com. Payment term will be 30% in advance(milestone), 50% will be made after every features are made and tested on evidcomm's server. 20% final payment will be made before evidcomm provide the full scripts and extensions to us. Total amount: USD 430 Time required: 10 days