Too bad the CCBill affiliate links do nothing to help with your SEO.
Imagine if CCBill allowed linking directly to the site; so many site owners would be killing it in the SERPs.
As for advice, the easiest thing you can do is sign up for linkspun.com and start getting some ABC links setup that have the incoming links pointing to your paysite.
Just be sure to hide and not categorize
http://www.privateschooljewel.com in Link Spun or you'll have people requesting links from that page which you cannot do if you want a leak free tour.