Gumtree Clone of equal quality website coding, design etc

Please ignore my budget listed, as I do not know how much this would cost. Please read careful and bid properly your final price. No hidden extras! I would like a website building exactly like Gumtree UK. I would like the appearance of this website changing a bit so it does not look exactly the same, but functionally speaking, it must do the same job and be built equally as professionally. I DO NOT WANT THIS WEBSITE BUILDING OUT OF SOME CHEAP TYPICALLY SLOW CODING. MUST BE EQUAL OR BETTER CODING TO GUMTREE. THIS WEBSITE MUST BE ABLE TO COPE WITH HUNDREDS OF THOUSANDS OF LISTINGS AND HEAVY TRAFFIC! The website design must be sleek, Quick loading, Able to cope with very high traffic without crashing, Solid robust servers, Server and user friendly, Be built with quality coding like Gumtree, Not be a template driven rubbish website, Adsense integration, Payment gateway integrations, All categories must be setup, All help files also ready for the user, You must do all of the testing, I do not want to be involved (I may help towards the end of the project). I may also require some small additional functionality so allow for this in the bid. Goole mapping integration, All Facebook pages, Youtube, Google +, Twitter and other social media pages must be setup for me. The website must have a extremely powerful back end admin panel. Must have spam prevention systems upon registration. I must own all rights to the work, no copies allowed or resale rights. The amount you bid must be your final price, no hidden extras! I am willing to pay separately, but I would require long term support, SEO and website maintenance with 24/7 availability. Bidders must be able to speak fluent English in both written form and verbally. Communications throughout the project must be through Skype. All communications must be confidential and all intellectual property must be respected.