Just a heads up though. Once you've uploaded the site to their servers, you ought to be careful. Some designers might be tempted to remove the site for non-payment, but your client could actually sue you for interferring with their business. So, once you've given them the site, it's best to go through small claims court or a lawyer to get the payment.

I know it's not this far yet, but just thought I'd mention it for the sake of discussion.

Cheers
Dzinerbear