Plan on making my first light bulb vaporizer today and I have a few questions for those that are experienced with them. First of all, I don't think I have any 100 or 120 watt bulbs, so what is the lowest wattage that is definitely safe to use? Also if the straw melts at all, I don't want to use it, so what are some other options? Lastly, is it neccassary to make a carb in the bottle cap, or do you not need it?