The temps arent different in africa between baby and adult lol. Yeah, 120-150 is perfectly fine for a baby.
The lights should have a wide beam angle like the bulbs shown in this: http://www.varanustalk.com/forum/sho...s-amp-advanced
take a look at this:http://http://www.varanustalk.com/forum/showthread.php?245-Understanding-the-Thermal-Gradient/page2