We am a preferred freelancer so 100% satisfaction was guaranteed. We have done a couple of adult sites and have hosted them as well, as you can't host on normal servers. I have noticed that hosting it on a UK server is so much easier, and so much efficient than on a US server, just a tid bit of advice that worked for us. With any clip website optimization for media is key, and if you can afford, then a media cdn server.
We have built a similar site for Tshirt making. Every customer could come and shop different stores for different types of Tshirts, and every client could come and either sell one type of Tshirt or open a store to sell numerous Tshirts. A percentage of each sale was given to the admin of the site. We covered him legally away from liability, and kept an administrative section for checking all stores for inappropriate content, but in your case we will do no appropriate content.
With our experience and being in US, we can definitely complete your website in deadline. Lets get started right now.