Hi there, I already have an immaculate Ms Access based system that does almost exactly as you looking for. I call it Job-Tracker. IT does: Clients/Suppliers databases, Raw Materials, Quotations, Order placements, Job-tracking (during production or service tracking), Materials purchases/requisitions, Deliveries and Invoicing, Product costing(Bills Of Materials-BOMs), auto-generate emails to clients/suppliers, link to other Ms Office products like Outlook, Word, Excel etc.
I am also a reputable trainer so will train you to do minimal support when need be.
My rates are very affordable, flexible and negotaible