Use the highest wattage bulbs you can find for the size of florous that you are using.
As for type, I tried gro lights but they cost twice as much and didn't last long so I went with full spectrum lights. It made sense to me to do so but a combo of warm and cool works fine as well. You can find all sorts of opinions on light types for vegging and flowering etc. but the fact is that it all works so don't sweat it