Detailed web app SPECIFICATION ONLY

I'm looking for an experienced project / product manager to create a detailed web application **specification** based on an existing website. We are only looking for the specification at this point and not coding for the actual project. The specification should be at least 10 pages and must detail: - app functionality broken into logical modules - screen wireframes / screenshots for all screens in the app - 1-2 core user stories per functional module - the logical admin panel associated with the web app - a web API spec to access the core data associated with the web app - anything else the code believes is important as part of the specification I'm willing to pay $100-$200 for qualified bidders; such bidders will be given additional information regarding the web app that the specification must be derived from.