WordPress Website Redesign and Upgrade

Seeking an experienced WordPress/web developer to redesign and upgrade our company website for OJL Jamaica Group Limited. The existing site needs a significant redesign to reflect expanded business areas: Air Conditioning, Workspace/Furniture Solutions, and Automotive products. Key functionalities include product/catalogue pages, project/case-study pages, Request a Quote, In Stock Now, product sourcing enquiries, WhatsApp/contact integration, and basic SEO/analytics. Development should occur in a staging environment to keep the current site operational. Please provide examples of similar projects, estimated timeline, and cost indication.