Finalize GST Invoice Config and Pre-Launch Audit

Hi, I have already built and configured my Greenshift Eco online store on Dukaan and am now preparing for launch. I am looking for someone experienced with Dukaan + GST/e-commerce setup for a final GST invoice configuration and pre-launch audit... (Budget: ₹1500 - ₹12500 INR, Jobs: eCommerce, Inventory Management, Payment Gateway Integration, PHP, Tax Compliance, Website Design)