website redesign and cms installation on website

I am seeking professional help in redesigning my website and installing a Content Management System (CMS) to ensure a high-quality user experience along with an invoicing solution on the website The main goal of the redesign is to improve user experience, and I am considering Wix.com for the CMS. In addition, I would like to have specific features and functionalities such as e-commerce capabilities integrated into the website. My website update must be efficient, aesthetically pleasing, and user-friendly.