Shopify Store Setup for Physical Goods

I want to start selling my physical products through a dedicated Shopify storefront. All of the items are already tracked in an in-house inventory system, so the job is less about stock management and more about building a customer-ready, conversion-focused store that can talk to my existing data... (Budget: $15 - $25 USD, Jobs: API Integration, HTML, PHP, Shopify, Shopify Development, Shopify Templates, Web Design, Web Development)