I need a website update

Here's a link to my fitness site which isn't live yet:
http://www.10gradefitness.com/smi/monthly.html

The concept is similar to www.classpass.com but for small group personal training in London, making personal training more affordable.

To add a bit more meat on the bone...

The link I have attached at the top of the page. I need the programming to make the page function.

1. Login: Facebook sign in, password, simple profile
2. Payment engine: Link payment to my already existing braintree account
3. Booking engine: Classes, and automated response of maximum capacity and maximum booked slots
4. Coach administration engine: Allow me to manually add new coaches to the website
5. A feature to add to the page is a coach to customer rating system like Airbnb and handy.com.

Collecting quotes at the moment. Send me your fee for the job and I will get back to you.

Will FaceTime to go over details if we go ahead together.

Best
John