Wordpress plugin - API based integration

General information for the website: vacation, rental
Description of requirements/features: I need a Wordpress plugin that can connect with clients account by my client API.
We are offering short-term vacation rental property owners the channel management and PMS software to sync and manage their reservations from multiple channels (Airbnb, Booking.com, Expedia etc.)

Agile based, I am looking for ways to offer our clients more flexibility to connect their WP website with the HW software. This can be a long-term project depending on the client's needs and improvements.

Wordpress plugin with a "free" and "paid advanced section".
Shows availability for listings. Calendars. (free)
Allows making booking requests based on availability. (free)
Allows basic fields in booking form (free)
Shows Hostaway branding (free)
Removes hostaway branding (paid)
Allows listing details download (paid)
Allows advanced fields push (paid)
Allows credit card payment details forwarding (paid)

Optional:
User creation on website.
Listing creation on website.
WP dashboard reports.
One click WP website creation based on template/hosting.
We are looking to start with a basic version and move forward from this.

Let me know who is interested and has time to discuss it
Specific technologies required: wordpress, UI designer
Extra notes: