Website for company invoices

I have a list of products I sell and I want to create a webpage (subdomain of an already existing webpage in Wordpress), with a login/password access where I could have 2 parts: 1. Editing/Creating/Deleting an item 2. Generate a new Invoice and a Delivery Note in PDF. Once both of them are generated, send to my email The products have the next fields: 1. Reference 2. Description 3. PVP in Euros 4. REUP in Euros 5. Image The invoices will have: - A predefined format (with my logo, name... etc) - A field for the customer - A field for the delivery address - A Search box for adding Products, Quantity, PVP, etc. - Number of invoice (automatically, internal count in the webpage) The delivery notes will have: - All Invoice information except PVPs. - Number of delivery note could be changed. Thank you,