Professional Website Development for Selling Online Physics Course

I’m looking for an experienced and creative web developer to build a high-quality website focused on selling an online Physics 1 course. I already own a domain and have a draft of my current site, built on Wix, which can serve as a base. However, I don't want an exact copy of what already exists—I’m looking for something entirely original, professional, and well-optimized.

The primary goal of the site is to be visually appealing, efficient, and highly functional, with a focus on converting visitors into buyers. Here are the essential requirements:

Technical Requirements:
Custom and impactful design:

Avoid using generic stock images and low-quality buttons. I want something unique that stands out and conveys credibility and professionalism.
Integration of sophisticated visual elements while maintaining simplicity and usability.
Call-to-Action (CTA):

The CTAs must be clear and strategically placed to intuitively guide users towards conversion. It’s essential to have visible and inviting buttons for purchasing or signing up for the course.
SEO Optimization:

The site should be optimized for search engines (SEO) to ensure the target audience can easily find the course on Google and other search engines. It’s crucial to include best SEO practices (keywords, friendly URLs, optimized tags, etc.).
Responsiveness:

The site must be fully responsive, offering an excellent user experience on both mobile devices and desktops.
Payment Integration (Optional):

If possible, I’d like to integrate a payment system so that students can purchase and access the course directly from the site.
User-friendly CMS:

The website needs to be built on a manageable platform (such as WordPress or a platform of your choice) that allows me to easily update and manage the course content.
User Experience (UX):

The navigation should be clear and intuitive. Students should easily find information about the course, and the purchase process should be smooth and hassle-free.
Security:

Implementation of good security practices, such as SSL, regular backups, and protection against attacks, to ensure the safety of the site and student data.
Ongoing Support:

I’d like to know if the professional offers ongoing support after the launch, in case updates, maintenance, or fixes are needed.
Information about the Physics Course:
The course is aimed at high school and college students, focusing on Physics 1 concepts (Mechanics), with explanatory videos, exercises, and resources to help them understand and master the content.

What I Expect:
I’m looking for someone who understands my ambitions and can deliver a premium product, avoiding the common or generic. This website should convey a professional image and highlight the course as a high-value solution for physics students.

If you believe you have the creativity, technical skills, and vision to deliver this project, please send your portfolio and detailed proposals.

Budget and Timeline: Open for discussion based on the quality and complexity of the proposed work.

I've filed some inspirations, if you're qualified, send me a proposal