My point is, how to keep a business running until the fat, ignorant lady hears about bitcoin? (sorry for putting it this way)
Choose a business that doesn't need to burn money on a daily basis. Many of us here are already paying for web hosting for other purposes. It's not like you have to obtain a business license and pay rent for a physical storefront and file quarterly reports with the government (you can if that floats your boat). Set up your site to send you an SMS when there is an order so you can forget about it until someone places an order. And, like kiba said, select products and services that appeal to ubergeeks.