AI-Enhanced eBook Store Revamp

I already have a half-finished website, but it still can’t actually sell my digital products. The main goal is to turn it into a smooth, trustworthy storefront for my eBook and use a light touch of AI to speak directly to visitors from specific U.S. states (for example, Mississippi).

What I need from you:

• Refresh the design: refine the layout, unify the colour scheme, and clean up typography so the site looks modern on both desktop and mobile.
• Set up a simple digital-product checkout (Stripe, PayPal, or a comparable gateway) that triggers an instant, secure download link and confirmation email.
• Integrate a lightweight AI feature—such as a geo-aware banner, chatbot, or personalised headline—that detects a visitor’s state and adjusts the sales pitch to improve conversions.
• Test every link, payment flow, and download on major browsers and devices, then hand the site back with clear notes so I can maintain it myself.

I’ll supply the current site files, brand colours, the eBook PDF, and copy. Please keep the code tidy, comment any AI logic, and let me know your preferred toolset and timeline. I’m after a practical, working solution rather than an extensive rebuild, so efficient, budget-friendly ideas are welcome.