I am interested in helping you with this task. I can finish the project in the time and budgets specified. I will supply a action plan to view and check the projects. I has installed for several companies (manufacturing/commercial/distribution/services) a web enable, light weight and open source PHP/MySql ERP system. It includes invoicing, inventory, receivable, payable, accounting, manufacturing, purchasing and connect it with e-commerce software. The time required to productions will depends on availability of data and functions desired (clients, items, accounting plan, suppliers, tax information, business rules, etc). Feel free to contact me if you need more information. Please check my profile. I am fluent in English and Spanish (native).