If you are ready to add this to your site, great!
You can get this admin integrated with a pre-existing design ($$$)
You can get a new custom design built around this admin ($$$)
You can get this site and admin in it's entirety for your own use ($$)
Or you can have me build you a design that looks this nice, but without the admin ($)
Whatever you want to do, go ahead and let me know so I can help you out on your next project.