Best of luck to you, but to be honest, you don't have a lot on the table. You have a limited amount of content, a site design, and other "back-end" stuff, CMS, billing, etc.
The problem is, your ideal person is someone who doesn't have anything set up already... no billing, no current members area or network, etc. But, you're not going to get that, because that same person would be in the same boat you're in now, because they would have no idea what they're doing either (I don't mean that in a bad way to you).
The flip side is you find someone who already runs a network and would add your site to theirs. But, they would already have billing, they would already have a content management system, etc... so all they're buying from you is a site design and content. They can get that themselves with little work and minimal cost.
So, your choices are to a.) sell outright, but because of the above I don't think you could ask very much; or b.) find a partner, but because of the above I don't think that would work for you or a potential buyer.
Just my
