Automatic create and sell website

Hi, I've seen that you have a lot of awesome plugins and maybe you can help me with your support.

My own biz is create website for my customer and they pay me with a membership.

I've seen these plugins:
- Pro Sites
- Multi-Domains
- Multi-DB
- Default Theme
- and many other awesome plugin.

The question is:
"with your plugins is it possible create an automated system where my client buy a membership on my website and automatically create a new own website with a default theme with my preselected plugin (and already configured) in a different domain for each client? [the automatic website is on new.mydomain.com but in a second moment I can set up a DNS of client and (in a second moment) they don't see new.mydomain.com but http://www.clientdomain.com/

Is it possible? and can you help me with the choice of plugin?

Thank you very much

Roby