Pro Sites Plugin - Different Questions

Hello,
i have some Problems in understanding the Pro Sites Plugin. I set up a wordpress multisite (subdomain), created my theme, my content and now i like to do the following:

1. Visitor comes to my page
2. Visitor likes it and wants to get a subdomain with the same content
3. Visitor go to checkout page (register-page?)
4. Visitor has to fill in some fields (how can i define the fields?)
5. Visitor choose subscription plan(is there the possibility to change the appearance?)
6. Visitor checks out and pay over paypal
7. After receiving the money i want to unlock the new blog

is it all possible to do withthe pro sites plugin?

Best Regards
Francesco