custom web 2.0 features on a ning.com platform

Hello, I am looking for a developer to work with on adding a number of custom features to a [login to view URL] site. The site is done (from what I know) in php and everything is customizable. The site will have customers looking for service providers who will be members of the site. I am looking to add a few features such as: -ability to rate users and leave feedback on transactions -ability to drop in assignments to a users calendar -text message notifaction to users when a job is dropped in their calendar or appears on the site within their area (zip code radius) -e-mail notifications of transactions -some sort of payment system integration (paypal would be best) between users I know all of the above features our out there, I just want to bring them to our niche that I work in. I would like to get this project at least in a beta mode with 45 days. There is definetly potential for longer term work with this project as more features could be addded after the beta launch. I look forward to working with you.