Pro Sites and Stripe questions – setting up sites on behalf of clients

Hi guys,

I am setting up a site for selling business websites to visitors. If they want to “roll their own” site, they can subscribe through Pro Sites as normal. However, I want to offer a means of setting up the site for them for a fee (for the technophobic clients I often find myself with). I figure on creating a custom payment page for that option that ties directly into Stripe, that will gather all the information I would need and create them as a Stripe customer.

Here’s my question – can anyone tell me how to connect an existing Stripe customer with a blog under Pro Sites? It is pretty easy to tie the subscription into the client on the Stripe side of things, but it would need to pull back into Pro Sites, or something, to put the system back into an automated mode.

Any other suggestions are welcome, too!