I'm getting ready to start my DIY LED project, and thinking about the LED arrangement. I'm thinking the closer the LEDs are to each other, the better (blending and shimmer). So I'm wondering if the experts here would recommend packing about 50 LEDs closely together in a cluster. By my calculations, it would come out to be about 6x6 inches area. Heat is the main issue I'm worried about. I was also thinking of using a single reflector similar lumenarc for each of these clusters. Thoughts?