What is needed is a clone of [url removed, login to view] with payment options through paypal, check and [url removed, login to view] and a few differences.
Payment needs to be to list a project and another payment once the project finds a successful applicant for the job.
There needs to be able to have multiple administration accounts that can edit/ delete jobs, members etc.
You have to make the whole site so that it is ready to use. This includes but is not limited to the template, all graphics, the script and installation.
Make sure you quote the correct time. If after 45 days ontop of your quoted time passes you will be required to release the funds for the project.