I think a Christian coffee house is a wonderful idea! There are starting to appear in many states. You should visit their website to see what they are doing. Maybe that will help you develop your business concept!
I like the Technivorm Moccamaster KBT741 is one of the few auto-drip coffee makers certified by the Specialty Coffee Association of America as brewing at the optimal temperature (200 degrees Fahrenheit).
I have the same problem. Usually going to to a friend's for dinner and other friends are there. I never know what to get them and end up bring black coffee with cream and sugar on the side. Yuk!!!! I was able to find a website that you can register your coffee preferences. It's an awesome...