OpenCart Store Setup & Integrations

I need a brand-new OpenCart store configured from scratch to sell physical products. The build should be clean, fast, and ready for launch, with all core settings in place so I can immediately start uploading items and accepting orders. Key deliverables: • Full OpenCart installation and theme configuration • Payment gateway integration (my preferred provider, plus test transactions to confirm) • Shipping options set up with rates that update accurately at checkout • Inventory management activated and verified so stock levels sync correctly across the catalog Please handle any back-end tweaks or extension installs required to make these features run smoothly, and keep the codebase upgrade-friendly. Once everything is in place, a short walkthrough or documentation on how to add products, process orders, and manage day-to-day store tasks will help me take over operations confidently. If you know best-practice SEO settings or performance optimizations for OpenCart, let me know—those extras are welcome, provided the main setup stays the priority.