Sir, I have read your project description. I have 8 year exp. In magento. I have done it previously opencart to magento development before, I have custom script for getting all product,category,order,customer everything data migrate in the magento, I have self made script for migrae data, wich I used it previously client, so I can do that work perfectly.i have exp. In magento theme customization, module creation, module customization also expert in opencart cusmization, module creation. I have 5.0 star rating with high repeated rate. I can do work perfectly. Please send me message on chat for more about discuss on project, thanks