One of my friends from Islamabad got it done from my guys. He gave them an extra 5000 for travel and food allowance for 2 guys. I think it was 20k all in for the job. They went to his place from Lahore after preparing all the material for seats, console and door panels and fitted it at his place in Islamabad.
Or you could plan it with a trip of Lahore when you are coming on the car. Order them on the phone and pay them advance through easypaisa etc. And then in a day or 2 when you come to Lahore, get the fittings done as it takes 2-3 hours for the fitting once its ready.
