At least 4000, if your household registration is not in Quanzhou now, the exam will take a long time, usually half a year, because you have to finish the Quanzhou household registration before you can arrange to take the exam elsewhere. If your household registration is Quanzhou, 1 month and a half is enough. Driving schools are almost the same, mainly the price. Some coaches can bargain, as long as the price is reasonable, it is the same for any driving school.