Hey you honestly dont need any light or supplemented heating. Just insulate the room make sure the temp is kept at 85 in the room. And thats it. Most people will say make sure you have them on a 12 hour light cycle. And one end of there enclosure needs to be 85 the other 90. But its not needed. It has been proven that even keepin them in pitch black for 24/7 (besides the time you go into the room) and just keeping the ambient temp at 85 is all that is required. I know alot of people who do it this way.

Im not sayin this to piss anyone off or anything but if your trying to find a simple and cost effective way of doing this there it is. But in the end do what makes you happy. Good Luck.