Hello, please hear me out. To be honest your project is really big. The design of your desired website and some of your requirements are quite easy to achieve. But the most part of it? No. It requires careful study, project management, planning, and a good set of developers, or else it will fail. Now, I know you might have already did some studies, but in terms of technical know-how, it seems rather unclear, yet.
I hope you're still with me.
The problem with projects like this is that most developers or clients fail to inform about the infrastructure and software requirements that are required on these types of projects. I can say these things as I have experienced these first-hand when I was a Development Operations Engineer in my previous employment. My tasks involved developing secured, robust, fast and reliable back-end software for the company's products. I also make sure that the operation must sustain the product, in fact, improve it.
I wish to talk to you more about these matters. If you're interested we can talk via chat or Skype call.
I want to provide you the best output. But a single person cannot complete all this in the number of days desired. I have a few contacts, like my colleagues, which I can hire for you.
Thank you for reading. You've come this far. Why don't we chat?