FULLY completed Restaurant POS system

We are looking to purchase a fully developed system that we can work with. The POS must include the following features:

Multi-store support as a SaaS product
Android or iOS app for restaurants (with offline functionality)
Complete online ordering system with advanced modifiers
Kitchen display system (must be compatible with Android or iOS)
Accounting integration
Inventory management
Gift card functionality
Loyalty program
Driver app
Waiter app for taking orders
Kiosk for customer to purchase on their own ( must be on android or window)