Build a Website similar to freelancer.com and SEO another website.

I want to launch a website that would be similar to freelancer.com in almost all ways. The functionality needs to stay same, the looks need to change. You also need to provide solution for the payment gateway. Please bid only if you have the experience to take up this project and would be able to comply with the guidelines. Detailed information will be provided to the selected freelancer. Most importantly, bids without a proper proposal will be discarded, please do not send your copy-pasted introduction, rather, provide me your experience, the approach you are about to take, estimated budget and time-frame. I would also like to hire someone well-acquainted with SEO to have a look at the site [login to view URL] (still in its nascent stage) and let me know an estimate for both. on-page and off-page optimization.