Which city you are from? If you're from Lahore, I can give you a number of an Hiace driver with whom we have gone to numerous places including Kaghan Valley, Rohats Fort & Cholistan Desert.
Btw, hiring an hiace for 13 days might be a little pricey too. If you don't mind, you can share your rough itinerary and we might be able to give you a better suggestion.