Website redesgin

I have an existing WordPress website that I would like to redesign and redevelop as a modern, professional single-page website. Could you please let me know: * What information or files do you need from my existing website? * Can you recreate the existing content and functionality while improving the design and user experience? * Can the new website be fully responsive and optimised for mobile, tablet, and desktop? * How long would the redesign and development take? * What would be the estimated cost? * Will the new design be SEO-friendly and optimized for speed and performance? I’m looking for a clean, modern, professional single-page WordPress website while maintaining the important content and functionality of the existing website.