If they ask what kind of lights they need, you should be honest and tell them to pick up several 1000w HID lamps. (One up top and at least a couple for the sides to make sure there's even lighting all around. And don't forget the A/C, fans, ducting and humidifiers to deal with waste heat.) Or move into a greenhouse.
Hehe, and if you mention dormancy, don't emphasize it much. You need return customers, after all. If they really wanted to do it right, they wouldn't just be taking your word at face value anyways.