Systems modeling and systems architecture for a software engineering class.

i want the correct answer based on the systems requirement i am writing below.

1.Functional requirement

The website shall use HTML, CSS and JavaScript as the website design language.

The website shall have an introduction page.

The website shall have a post a room page.

The website shall have a find a room page.

The website shall display available rooms and vice versa.

The website shall use MongoDB as the database.

It shall be accessed using Node.js.

The website shall record reservations.

The website shall record customer details.

The website shall record the customers feedbacks.

The website shall send confirmation for each reservation using email.

The website shall accept payments using only PayPal.

The website shall be able to create, modify and delete users.

2.Non-functional requirements Backup

Server shall backup data from the database.

Reliability

A backup is made regularly to ensure stability and restoration of the system in case of failure.

The website shall be readable and easy to use.

Maintainability

The website shall adapt to changes through systems upgrade.

Availability

The website should work 24/7.