Build a Website

Require a php website that has these Main functions: (UI MUST be Professional/User friendly) (Kindly give suggestions on the below functions or if you have a better solution to this) -Customer relationship management functions (handle clients information, set reminders, etc...) -Leeds management functions (similar to Customer relationship management functions) -Inventory ("Open field" categorizing, keep track of stock quantify, add cost price, add selling price, etc....) -Invoice/Quotation (Billing base on "Inventory" products or non inventory products, etc...) -Payroll (handle company's staff detail and salary details, etc...) -Report Function (Generate report on above functions)