So referring to the map image that is confusing you I guess,
The N15 option is not available as told..
The dotted path with Besham in the way is the only option you shall opt.
Your route from Lhr will be:
Lhr > iSd > abbotabad > besham > chillas > hunza
Where Lhr to Besham is 10hrs drive
Besham to chillas is 5hrs drive
Chillas to Hunza is about 3hrs drive.
Regarding safety and all, Besham to chillas road is not in a good shape but you have to face that.
You shall reach chillas before sunset, as advised usually so manage your itinerary accordingly.
So when with family, you shall consider driving to hunza in one stretch.
As for the Pir chinasi & banjosa/rawlakot, this does not fall in your route to hunza so you have to put them together either at the start of at the end of your hunza tour.
Sent from my iPhone using PW Forums