Yes mate, you'll need to sort the headlights, the stickers are probably the job, rather than faffing with the levels...
Make sure you have a yellow jacket for each of the passengers and yourself, spare bulb kit, um you need breathalysers too! I think a red triangle, but not 100% on that... Also, if you get in your car in France, put seatbelts on before even starting the car...if I think of anything else I'll post. :)