The basking bulb does NOT need to produce UVB, it is just best to have a real light for basking. The basking bulb should be producing the heat, so what do you mean by "in addition to the heat"? Yep, its the wattage, not the amount of light. Any bulb should put out sufficient light. Halogen is a good choice, they throw out a lot of heat, so make sure that the wattage is good and all. I've never heard of CHEs as basking lights, that's why I think that you should just go with a regular bulb.