Project and Client Management

Hello Experts, I'm planning to have a web based application to automate the process dealing with my clients and projects initiated with them from the moment we generate them an ESTIMATE till the ESTIMATE get approved and turned into a contract then a project starts and then following up project's tasks, resources, cost and performance.. attached is my thoughts for the workflow and how it should be automated... "the details for each entity are not the final, this is only brief just to clarify the objects". Please go through the attachment, understand it correctly, revert back to me with any comments or questions and then provide me with your proposal "Documented" with all the functionality and modules breakdown you see you could provide in the application as well as your delivery time frame and cost. Please note that, this to be a web based application, developed over asp.Net/VB.Net with MS SQL server and to be delivered with full source code and documentation needed. good Luck