Business ERP Codeigniter - Codecanyon App customization -- 2

Hi, I have a Business ERP Codeigniter project from codecanyon link in the below: [login to view URL] project file i will provide I need the following to be done: 1. Sale/Purchase Invoice as per Indian Gst 2. Sale/Purchase Invoice print Layout as per Indian Gst with different template 3. All Gst Tax Report as per Indian Gst 4. financial year data selection 5. Sale Invoice number and prefix auto change when detect financial year change 6. data migration /synchronization any version of tally or marge data to this erp and this erp to tally or marge data. Looking for developers with strong codeigniter development skills. Thank you.