Shopify Site Revamp to Elegant Classic Design

I'm looking for a complete redesign of my Shopify website, incorporating a new classic and elegant template. The site also needs to link all existing products into easy-to-use categories.

We have a wholesale company for computer & laptop parts. Website is up and running but I need the categories to be more complete and easy to navigate.

References:
https://www.quadsource.ca/
https://www.mobilesentrix.ca/

Key tasks:
- Redesign the website on Shopify with a classic and elegant template. I’ve purchased a couple of ready-made themes and added them to Shopify. You’re welcome to use those or bring in fresh templates to build on.
- Link all existing products into user-friendly categories.
- Ensure the new website has user-friendly navigation, advanced search functionality, and is mobile responsive.
- menus and drop down sub menus are crucial
- List new products on Amazon and Best Buy in addition to the website.

Ideal skills for the job include:
- Extensive experience with Shopify.
- Strong design skills with a focus on classic and elegant aesthetics.
- Proficiency in creating user-friendly e-commerce sites.
- Experience listing products on Amazon and Best Buy.
- Excellent understanding of mobile responsiveness and advanced search functionality.