Website development using Netfily, Sanity CMS, newsletter, shopify store setup

Hello, I have an existing Visionaires website built with Claude, along with a detailed developer handover document. I'd like to focus on getting the website live with a solid foundation that can scale in the future. Here are my priorities: 1. Website Launch – Netlify Deploy the existing website to Netlify. Connect my domain. Configure HTTPS and basic security. Ensure the website works properly on desktop and mobile. Optimize loading speed and images. 2. Content Management System – Sanity CMS (Very Important) Integrate Sanity with the existing website. Allow me to independently add and edit editorials, interviews, films, magazine content and Wisdom Library entries. Allow me to update homepage text, images, links and general website information. Make publishing simple, without requiring coding or developer assistance. 3. Email Collection – MailerLite or similar Connect email subscription forms to MailerLite or similar Create a subscriber database for the Wisdom Library and general newsletter. Set up a branded automated welcome email. Ensure proper email consent and unsubscribe functionality. 4. Basic Security, SEO & Performance Configure essential security measures. Set up basic SEO, sitemap and Google Search Console. Optimize website performance. Ensure the code is properly maintained in GitHub. Future Integrations (Not Required Immediately) Shopify for our online store. User accounts and personalized experiences. AI-powered philosophical exercises. More advanced interactive and immersive experiences. Important: I want to preserve the existing website's immersive design and functionality rather than rebuild it unnecessarily. Please review the existing codebase and developer handover first which will be provided privately. Let me know: what would be a fixed cost fee for this project? Would you recommend keeping the current Python-based website generator or moving to Astro for easier CMS integration and future scalability? Are there any technical limitations or issues we should address before launch? My main priority is to launch a beautiful, fast, secure website that I can easily manage myself and expand over time. Thank you!