Create a PhoneGap application

I have a site, which I already turned into a mobile web app with all the PHP code on the server side so I will be able to use the PhoneGap builder to build it. I need a PhoneGap expert to help me do the adjustments needed for the app to work properly. The mobile web app contains features like geolocation, media uploading from device (in the code is done using youtube/picasa api), and registration (also logging in using facebook or google connect), so I need help to make all these work properly on the PhoneGap build. I'm not sure how much work this is, so the budget is flexibale. I'm now finishing the adaptations of PHP on the server side, so this project will start in a few days.