Modern E-Commerce Website for Mobile Devices,Selling as per Grade, (A tailored inventory System)

I'm in need of an experienced professional who can develop a fully functional, modern and sleek E-commerce website for selling mobile phones, tablets, wearables, laptops, and accessories, both online and offline.

Key Requirements:
- Comprehensive E-commerce website
- Detailed inventory system with a full dashboard
- Tracking of purchase, sales, returns, and stock history
- Recording phone history and sales history
- Bulk invoicing capability for offline sales
- Stock list organized by company and customers
- Unique barcode for every device with IMEI and generated serial number
- Device grading system
- Daily emails to subscribers Email
- Listings on Google Shopping
- Installation of a secure payment gateway
- Integration of Klarna and other payment portals
- Implementation of SSL and other necessary security features, Strong Seo Database

Additionally, I expect you to:
- Suggest other essential features that should be included
- Provide examples of similar projects you've completed

Design Style: The website should embody a modern and sleek design.

Payment Methods: The site should accommodate multiple payment methods including Credit/Debit Card, PayPal, Payment Gateway, Klarna, and Stripe.

Third-Party Integrations: The website will require integration with a CRM software as well as accounting software.

I am looking for someone who is fully available to expedite this project. Delays without valid reasons will lead to the cancellation of the project. Please share your previous similar projects for my review.

Example Websites :
https://www.thebigphonestore.co.uk/
https://www.4gadgets.co.uk/
https://www.mozillion.com/
https://www.meeliemobile.com