BookingBox Script Customization - URGENT

Description

PROJECT CUSTOMIZATION NEEDS
BookingBox Script Customization
I need a professional with extensive experience in PHP and JavaScript to make specific adjustments to the BookingBox Script.
OBJECTIVE
The Project is to create a Multi –Hosts, Multi property All in One platform for unified management of their short-term rental properties. Similar to web apps:
1) https://www.easypms.com/pms/2) https://www.bookingautomation.com, 3) lodgify.com
System customized to serve the features?
1) Host ability to subscribe to the platform and manage their properties on monthly subscription at a small fee2) Individual hosts dashboard to manage their multiple listings3) Hosts to add listings, Rooms, Seasonal, Daily, Long-stay Rates, Amenities, etc and manage Availability and prices4) Unified Calendar to show bookings across OTA’s with price and booking source (See attached calendar for reference)5) Rates Management/Updating across channels6) I need Ical Sync – Import/Export to: airbnb, booking.com ,verbo – (For Manual Sync with Cron Setup7) Channel manager Integration - for automatic sync8) Housekeeping status (Mark listing as clean/dirty/repair etc)9) Housekeeping status Notification – Sms/Email notifications to housekeepers to clean rooms10) Unified Inbox : Auto emails/sms for booking confirmations, reservations etc for hosts to receive when a booking is made on any of the platforms and guest communications11) Direct booking – host to add booking requests directly on his dashboard (for walkins /calls etc) and booking to block calendar on otas12) Invoicing/Finance reports