Next.js Mortgage Broker Website Redesign

Hi, I'm looking for a developer to completely rebuild an existing UK mortgage broker website. The existing website is approximately 54 pages and is currently built using WordPress. Rather than rebuilding it using Elementor, I would like to move to a modern architecture, ideally Next.js with Sanity or another suitable headless CMS. The scope would include: • Recreating/migrating approximately 54 existing pages • Retaining and modernising the existing design • Migrating all existing content • Preserving existing Google rankings and SEO • Keeping existing URLs wherever possible • Creating 301 redirects for any URLs that change • Migrating page titles, meta descriptions, headings, schema and internal links • XML sitemap and robots.txt • Excellent Core Web Vitals and page speed • Fully responsive mobile/tablet/desktop design • Easy CMS access so I can edit normal content myself • Mortgage calculator • Stamp duty calculator • Secure document upload facility • Contact/enquiry forms • Appointment booking functionality • WhatsApp integration • Google reviews/testimonials • Google Analytics and conversion tracking • FCA/compliance pages and disclosures The website is for a regulated UK mortgage brokerage, so SEO migration and reliability are particularly important. Could you please provide: 1. A fixed-price quote for the complete project 2. Estimated completion time 3. Examples of similar Next.js/Sanity websites you have built 4. Examples of WordPress websites you have migrated 5. Confirmation that I will own the source code and CMS account 6. Details of what ongoing hosting/maintenance costs would be Thanks,