Bookkeeping, Payroll, Accounting

I am looking to start a website for my new accounting business. I would like existing and potential clients to have the following options: 1- Log into their accounts, view updates, statements, and messages. 2- Scan financial and other statements directly to their account, which should give me the ability to view what they scanned. 3- I would like the ability to post documents such as financial statements, etc… to the clients account. 4- Payroll services: the ability for customers to print checks for payroll directly from their account. ? I am looking for a professional who can do all what is listed above. Accounting experience is a plus. Thanks [][1]