Full-Stack E-Commerce Consultation

I’m building a small e-commerce site and want a concise, full-stack overview before I start coding. The store will launch with a product catalog and shopping cart; user reviews may come later, so I need choices that keep that door open... (Budget: $250 - $750 USD, Jobs: API Development, Backend Development, Cloud Computing, Database Management, Frontend Development, Full Stack Development, Web Design, Web Development)