Website Booking & Subscription Integration

I have a working company site that I generated with an AI builder; now I need it to do real business. Specifically, I want visitors to be able to (1) reach out or reserve a slot with us through a streamlined booking form and (2) purchase our digital service subscriptions securely, then jump straight into a members-only area without any manual hand-holding. Here is what I’m after: • A contact/booking flow that’s easy to use on both desktop and mobile—basic calendar selection and automated confirmations are plenty for now. • A payment pipeline (Stripe or comparable gateway) that handles single payments and recurring subscriptions, issues receipts, and ties each successful transaction to the correct user account. • An instant-access members area where paid users land automatically, protected behind login credentials and ready to host our digital content. The front end is already styled, so you’d mainly focus on wiring up the back-end logic, database/auth layer, and any required middleware or APIs. I’m happy to take your guidance on the best stack or plugins as long as the end result is reliable and easy for me to maintain after hand-off. Deliverables will be: 1. Fully functional booking/contact form integrated into the existing site. 2. Payment + subscription flow live in production, tested end-to-end. 3. Secure member login area automatically provisioned on successful payment, with a clear way for me to manage users. 4. Short walkthrough or screencast showing me how to tweak settings, plans, and user roles moving forward. If this sounds like your kind of build, let’s talk timelines and the best approach.