Build a website for a hotel

We are a property development company opening a chain of hotels. We require a website that can handle - 1) Web booking engine 2) Channel manager 3) Pricing and availability is controlled in one central point 4) Accounting 5) Billing & payments 6) Accountables for inventory levels 7) Corporate customer login for preferential business rates 8) Promotional codes 9) Multiple simultaneous staff access, logging ‘who-did-what’ with different access levels for managers and staff. 10) Create minimum stay requirements for peak periods or weekends 11) Easy to view guest accounts, capable of entering our bookings on one screen in seconds & automatically adding guests to the customer database, and retrieve their contact information on rebooking. Design-wise we want it like [login to view URL] We will require more websites in the future as we open more hotels.