Home swap website design and developme

Need to customize a home swap/house exchange website. I know there are a lot of open source packages out there but i am willing to pay a coder to customise this to my needs. 1- Member's ability to post listings and photos with a google map link to address/location 2- Credit card and paypal payment methods 3- Ability to include third party advertising such as google adsense and graphic banners 4- Registered members only can see listing contact details 5- Home page customization and some graphic design work 6- other creative ideas will be rewarded.