Website with Login, Shop, Blog

I have a working proof-of-concept at https://bizunno.com/; now I want the same idea rebuilt cleanly so it is easier to maintain and scale. The finished site must feel just as fast as the current demo, but with production-ready code and a modern tech stack you are comfortable supporting.

Core scope
• A secure user system that relies on classic email-and-password signup, complete with profile management, password reset and verification emails. I am open to adding Google OAuth as an extra convenience once the primary flow is solid.
• Full e-commerce layer: product catalogue, flexible pricing, shopping cart, checkout, order history and a basic admin to add or edit products. Popular gateways such as Stripe or PayPal are fine; propose what fits best.
• Built-in blog so articles can be published without touching code, including categories, tags and an easy WYSIWYG editor.

Acceptance criteria
1. Mobile-first responsive design and WCAG-friendly accessibility.
2. Clean database schema, well-commented code and a short README that lets another developer spin the project up locally in minutes.
3. All three pillars—login, store and blog—fully tested and demonstrated live on a staging URL before hand-over.

If you can reuse solid open-source frameworks to speed things up, great; just keep licensing in mind. Let me know which language, framework and hosting stack you suggest and roughly how long each milestone (authentication, e-commerce, blog) will take.