Website creation with individual customer webpages / accounts

General information for the website: Accountancy Services Online Kind of development: New website from scratch Description of requirements/features: Individual private customer portal area webpage Extra services needed: Domain, Hosting, Installation, Customization, 3rd party integration, Optimization, Security, Other Extra notes: Basic website with individual customer areas / portals. I would like a website that can sell four packages at a set fee with each package having five products. Each package if possible could be customised by adding and deleting a product. The customer chooses a package at a fixed fee (probably only one needed) and goes through to check-out. The customer can then either create a log-in name and password or leave an email address. The purchase can be either paid monthly by direct debit (GoCardless or similar), paid in full or even if possible by bank transfer or cheque / on account. What I then would like is for the customer to sign in (either from the automated log-in / password created at check-out or by me providing them with a log-in and password by emailing them manually. The customer can then sign in to an individual private webpage that I can edit and update. As an example the customer pays for one package that consists of five accountancy services. The webpage (accessible only by the one customer) can view the status of their accounts/services and also be able to download documents. As an example I edit their webpage to show five purchased items. One item is lets say company accounts. I can then edit the webpage with information like deadlines and upload a set of accounts. Once I have edited the webpage I then email the customer to say their webpage has been updated and now they can view their accounts. The customer then can sign in and download their accounts. The webpage has five products and the customer has bought five services, listed for instance: Accounts - (information about deadlines etc) - download your accounts here button. Payroll - (Information about employees which I will update) Download your payslips here... Company Formation - (information about when the business started) Download incorporation documents. Tax Returns - (details about deadlines) - download your tax return button Each page for each customer can be edited by me and then I will email the client to say it's been updated. Any help appreciated. Thank you Ian