Build B2B/B2C E-Commerce Platform

We are updating Buencalzar.cl, our online store for clothing, accessories, and shoes. To do this, we will update our B2C store to PrestaShop 9.0 and install new features using a modern template we have acquired. This template includes many more functionalities that will need to be adapted to our requirements.
In addition, we will create a separate store for our B2B clients using this same template. This store will allow them to both purchase products and request quotes. Both platforms will be built on PrestaShop.
Core requirements
• Dual customer flows: a public B2C storefront with retail pricing and a gated B2B area that shows tiered pricing once a buyer is approved.
• User accounts and profiles so every customer can track orders and, for B2B clients, manage bulk orders and saved quotes.
• Real-time inventory management synced across all product variations.
• Shopping cart that supports quote requests (B2B) and instant checkout (B2C) with major payment gateways.
• Integrated customer-support chat that lets shoppers reach us instantly from any page.
• Mobile-first responsive design with clean, fashion-forward visuals that fit our brand.
• Admin dashboard where I can upload products, update stock, set wholesale rules, create discount codes, and view analytics.

I’ll provide branding assets and product data; you handle setup, theme customization or bespoke UI, back-end configuration, basic SEO, and one round of refinements after internal testing. Deliver the finished site on my hosting or suggest a managed solution you can deploy.

When you reply, outline your preferred tech stack, a high-level timeline, and examples of fashion or multi-tier e-commerce sites you’ve built.