Full-Featured Ecommerce Website Development Needed

I'm seeking a capable agency or team to develop a comprehensive eCommerce website for my business. I need a full quotation and timeline before proceeding.

1. Design and Development
* Custom Design: Tailored website design reflecting your brand identity.
* Responsive Layout: Ensuring compatibility across all devices (desktop, tablet, mobile).
* User Experience (UX) Design: Intuitive navigation and layout.
2. eCommerce Features
* Product Catalog: Up to [X] products with categories and filters.
* Login Page and admin panel for Handling and adding images and video
* Shopping Cart: User-friendly cart system with editing capabilities.
* Checkout Process: Secure and simplified checkout with guest and registered user options.
* Payment Gateway Integration: Support for multiple payment methods (credit/debit cards, PayPal, etc.).
* Inventory Management: Easy management of stock levels and product listings.
* Order Management System: Tracking and managing orders.
3. Additional Features
* User Accounts: Allow customers to create accounts to track orders.
* SEO Optimization: Basic SEO setup to improve visibility in search engines.
* Analytics Integration: Google Analytics setup for tracking website performance.
* Security Features
4. Timeline For Full Website with Design
5. Pricing And Estimation Quote Frontend (REACT JS ) Backend (NODES JS) and Design
6 Payment terms