Before you do anything else get the headlights lined up properly in dipped and main beam. They aren't bad headlights at all I don't think, but you have to get them lined up properly. Take it to somewhere that does MOT's as they have the kit to do it for you. Then i would get better bulbs or a 4300k HID kit. The optional standard HID setup is worth having but the headlights cost a bomb!
Bulb specs are in the useful threads.