Shopify Store Design for Product Sales

I'm looking for an experienced Shopify designer to create a store for selling physical products. The store should include live chat support to assist customers.

Key Requirements:
- Professional and user-friendly design
- Integration of live chat support
- Mobile-responsive layout
- SEO-friendly structure
- Setup of essential Shopify features (product pages, collections, etc.)

Ideal Skills:
- Proven Shopify design experience
- Strong understanding of e-commerce best practices
- Knowledge of SEO and mobile optimization
- Ability to integrate live chat support

Please provide examples of previous work and a timeline for completion.