Custom Modifications required for Opencart

We are moving an existing established Oscommerce site over to Opencart and need some custom scripts that we have developed for Oscommerce redeveloped for the new site: Address Data Export (Admin) We use Royal Mail and DPD (courier) to dispatch our orders and we currently have 2 scripts (one for each service) which generates the relevant shipping data (name address, weight etc) as data files and saves them to a secure folder on the server where they are downloaded via sftp and processed by the shipping software. This means that we can simply press a button on the back end for the data to be produced/downloaded and processed. Product Data Export (for personal messages) Our gift products have an option where customers can add a personal message. We have an existing script which will perform a search on all orders in a particular status, and export the order number, Product Name and option value (Personal Message) only for those products with that option. This data is saved as a CSV file which we can then import into Word for printing out the personal messages. Once the action is completed all the orders that have been checked are moved to a new status to ensure this process isn’t duplicated. Delivery Date (Font End) We will have installed a delivery date script which allows customers to select a date they would like their order delivered. However, we would like some modifications done so this script only appears is a certain delivery method is selected as this is a premium service and only available for certain zones (I will use a zone based shipping module for this). I can provide a much fuller specification to the successful bidder, plus as these are existing mods for our oscommerce site I can provide a test version of this site so you can see how the existing scripts work.