Website to Magento Store Conversion

I already have a standard informational website and now need it converted into a lean but fully functional Magento storefront for physical goods.

Scope
• Install and configure the latest stable Magento version on my hosting.
• Migrate or recreate my existing pages within a clean, responsive Magento theme that matches our current branding.
• Set up core catalog functions so I can add products myself, including price, images, variants and stock-keeping units.
• Enable product reviews, live chat support and basic inventory management out of the box.
• Connect one mainstream payment gateway and standard shipping methods.
• Make sure checkout, cart and account areas work smoothly on desktop and mobile.
• Provide a brief hand-over guide covering login, adding products and processing orders.

I have product data and brand assets ready to share as soon as we start. The emphasis is on getting the initial store live quickly; I can handle extended customization later.