If I were you, I would seriously think about trying another model.
You see, the TGP model worked 10 years ago. But with the rise of tube sites and webcam platforms, it's very hard to convert with TGP websites especially circle jerk-type of TGPs.
You see, adult webmasters have been educating their website visitors to demand full-size videos.
That's just the way the game is right now and if you're just going to show teaser pictures, that's not going to cut it.
You probably would have to drum up huge amount of traffic to convert a very tiny fraction of that.
Your return of investment might be lousy.
If I were you and I'm thinking of going into the online adult industry, I would focus on webcams, live cam shows and other forms of live entertainment.
The good news is that there are all sorts of white label solutions you can try.
Also, one of the most common ways to promote cam-based adult websites is Tumblr.com.
You might want to start investigating there.