If you are not a cam site operator or someone with inside access to recruiting cam models you will not do very well as a professional.
We spend a lot of time and effort chasing model registrations trying to get the model started out and it's not easy. The site receiving the application has a lot of information that the model has submitted to use in helping her get started -- what do you have? Why should you succeed where you are not a broadcast cam site? How many full time support staff do you pay a salary to and can make new model support part of their job?
If you are going to put up a 'paper tiger SEO site' with no active participation in actual broadcast, I would suggest you look for start up cam sites that will pay you $10.00 a lead -- you will make more money that way
