Thanks for your help.
As I'm already working in some kind of "grey zone" I don't think much about problems with the code. (All fixtures are not approved in Austria, ect) I was mostly interested in practical and security issues. I think the biggest problem will be that we will have to get even the lightbulbs in America as there's no 110V country around.
e-Barnet doesn't seem to be a really good idea, probably I'll try electricsupplyonline. However they use more abbreviations than you can imagine. So shopping there will be a nice pile of work. I'll also maybe get some stuff from laner.com. Does anyone has experiences with these companies?