inventory management system ( bid with your final offer price )

Need to design a system that does the following :- 1- Merchandise inventory management (with the possibility of major items grouped into subclasses-classifying any subfolder under the main category) 2- Full management of sales and cost of sales and budgets (integrated accounting program). 3-Pages to manage customer relationships with key information as well as sales accounts and billing statements and nature (for invoices or pushed with the possibility of periodic payment date reminders and special reports. 4- full staff management 5- Save forms and contracts-contract quotes and what its judgement 6-Create, open, modify and close accounts of projects (with the necessary reports and abstracts and bills and statements as well). 7-Future action will be applied to mobile application will sell products with delivery to customers. Thus we want to bind this application with the program or that keeping unrelated application sales data are entered manually to the program as a kind of protection not only..... Do you have the possibility to do this kind of system ! Bid with your final price and estimation of delivery time