mineistaken

Hi, I have 3 ideas:

1. Charge escorts listing fee ( how much are they willing to pay, maybe I will scare most of them by charging? )
2. Charge visitors - if they want to get a contact of any escort listed on my site they pay like 1$ by sms billing. Or maybe 5$ for all the contacts? Something like that.
3. Don't charge any of these and monetize only by advertising. But I don't see much money coming that way, even if you have decent traffic.
What kind of ads are relevant and would make me the most on escort directory?

Thank You in advance for any advice