Build a Clean, Modern Performance Automotive Website (Weebly or Shopify)

I'm looking for an experienced web designer who can build a clean, modern website for my performance automotive business, Kessels Tuning. I currently have a Weebly website, but I'm open to staying on Weebly if it can achieve the look I'm after, or moving to Shopify if you believe it's the better platform. I want your recommendation based on ease of use, long-term maintenance, and customer experience. The design style I'm looking for is similar to www.TheStreetcarShop.com website—modern, clean, premium, and easy to navigate and to book. Website Pages Home Remote Tuning Dyno Tuning Contact Us (Optional) About Us / Reviews if you think it adds value Requirements Modern, high-end design Mobile responsive Fast loading Easy for me to edit basic text and photos after completion Search engine friendly (basic SEO) Booking & Payments The most important feature is allowing customers to book and prepay online. For both Remote Tuning and Dyno Tuning, I'd like customers to: Select the service Choose an available appointment time Complete a short information form Pay online at the time of booking The booking process should be simple and professional. Information to Collect Name Phone Email Vehicle Year / Make / Model Engine size Transmission Modifications Fuel Type Additional Notes (Optional: ability to upload photos or a modification list.) What I Already Have Business logo Vehicle photos Existing website content Domain name Existing Weebly website Please Include In Your Proposal Which platform you recommend (Weebly or Shopify) and why. Links to 1-3 live websites you've personally built that are similar in quality. Your estimated timeline. What's included in your quoted price. How many revisions are included. I'm looking for someone I can continue working with as my business grows.