Add features to Magento Plugin

Hi, We use this Magento plugin to generate and print UPC labels: [login to view URL] It works great except we need to fix one feature and add a few new features. Fix: The batch print labels for multiple different products at once does not work correctly Add feature: Set quantity of labels to print when printing labels for multiple different products at once Add feature: Ability to upload a .csv spreadsheet with SKUs and QTY of labels to print, and the plugin will generate all of these. Add feature: If item has special_price, then include special_price on the label, mark it on sale, and strike through the regular price. Please bid appropriately and be sure you are an expert on Magento plugins to be able to complete this task professionally. Thank you for looking!