E-commerce Site for Digital Downloads

I need a full-featured e-commerce site dedicated to selling digital products. The store must let customers pay and receive their files instantly after checkout—no manual fulfilment.

What I expect:

• Responsive storefront with a clean, modern design
• Secure cart and checkout (Stripe and PayPal preferred)
• Automatic file-delivery workflow: after successful payment the buyer sees a download link and receives the same link by email
• Admin area where I can upload files, set pricing, and track sales
• Basic SEO and Google Analytics integration so I can monitor traffic and conversions

Nice-to-have, but not essential in this first phase, are license key generation and a lightweight user account section for order history.

When you respond, tell me:
1. The framework or CMS you recommend (Shopify, WooCommerce, custom Laravel/React, etc.) and why it suits digital downloads
2. Examples of similar stores you have built
3. Your projected timeline, broken into clear milestones from setup to live test purchase
4. Any hosting or security considerations I should plan for

Brand assets, product files, and copy will be supplied. The job is complete when I can perform a test purchase and receive the download automatically.