Custom Wordpress sites, ongoing engagement

I manage a variety of projects and have staff to cover them, however there is sometimes overflow that we can't handle. I am seeking an individual or firm that can handle a range of development projects to cover that overflow. Most are Wordpress projects, things like taking a PSD of custom design comps and building the site to a functional spec with editable areas as defined by the client. User Experience is usually defined by me and is a part of the functional spec. You will bid on projects from details I am provided from initial contact, then again when I refine the requirements with the client. This bid is for a specific project that is a good example of the project types I get. If we work well together on this one we can build a long term relationship. <THIS_PROJECT> -Custom Wordpress site, client hosted -Subscription model site with 5 levels of subscriber that allow access to 5 different levels of content. -Total content of site ~500,000 words -Discussion forums required, access restricted based on subscriber level. -Custom page templates, 5-8 page types -Custom widgets to display content in custom configurations -Fully responsive -UX and design comps will be provided. -Assume minimal design work required, such as updating image sizes or CSS Sprites. Please provide your total anticipated hours as well as cost, and assumptions made to get to that number. </THIS_PROJECT>