Website for a nutritionist with a combination of website (image)

Hello, the subject of this announcement is the creation of a website including marketing, image, online store and communication between the nutritionist and the client. I have a preliminary design dissected to facilitate pricing. I mainly care about systematizing and speeding up the work at the stage of signing up for consultations and starting dietetic cooperation (online payments, online calendar, qr-ticket enrollment, discount codes, vouchers) and automating enrollment and email contact. In addition, I'm keen on creating the ability to log in to the client's account and the dietitian's account. Other aspects he wants to include in the site promotions (invitation) to social media and redirection to, for example, Trust Pilot and other sites. In the future we plan to introduce an online store. I would be mega grateful for hints on innovative solutions, a look from a different perspective. I depend after the creation of the site on supervision, hosting or referral to a person who would be suitable for this task.