Custom PHP Project [Google API, PayPal Integration, Custom backend portal]

I am looking to develop a website that will allow both personal and businesses in the Uk to hire their items. The format of this website will be similar to [login to view URL], however will allow personal consumers to use the site to rent their own items, there will be a formal review structure similar to eBay feedback system. There needs to be a registration facility and listing facility to upload your items for hire, there also needs to be a localised search using your postcode or city to see how far you are from the item you would like to hire. Items for hire will need to be organised in subcategories and main categories, i need the flexibly to change these categories myself, i also need the flexibly to change the home page images. What we are looking for, What still needs to be done:- We would like the work completed in 30 days the project has potential for bonus if completed early or to a higher than expected standard. Things that need completing on our site:- Implement payment system (paypal merchant services) Implement sort by price/distance on search Implement system for calculation distance between search location and search results (2 points on google maps) Implement google maps into listings Intergrate calendar into website Implement user management in admin cp Implement statistic in admin cp Include artwork for banners and promotional boxes Tidy-up site layout Minor changes to text and headings Implement promotional discounts Facility for email marketing Test site for bugs Correct Listing bugs Ensure site displays properly on mobile devices. Upload site to domain Please see [login to view URL] (login - leeakelly70 pw - hireyours) [login to view URL] (login - admin pw - admin) Attached is a comprehensive project agreement, with milestones for each part of the project.