This proposed itinerary is subject to condition that Babusar Top is open. You can confirm by calling any hotels mentioned in 'Day 2':
Day 1 - Isb to Shogran - 6 hrs - stay at Arcadian
Day 2 - Local jeep rides to Siri/Paya - checkout afternoon for Naran - arrive at Naran (2 hrs) - stay at Fairy Meadows/Millinium/Sayyam Heights (all discounted owing to ramazan)
Day 3 - Naran to Gilgit via Babusar Top - 7 hrs - lunch at Serena - move on to Hunza - 2 hrs - Serena/Hunza Embassy Hotel
Day 4 - Khunjerab - 8 hrs roundtrip
Day 5 - Stay on at Hunza - visit Nagar Valley - witness sunset at Eagle's Nest
Day 6 - Stay on at Hunza - relax/shop - enjoy Hunza's famous walnut cake at a local cafe
Day 7 - Start return journey to Naran via Babusar Top - 9 hrs (sorry no choice)
Day 8 - visit Lake Saif Ul Malook - relax
Day 9 - Start return journey to Isb - 9 hrs - stopover at Abbotabad for lunch Usmania/Mr Cod
I suggest, for a start, you trim down your tour to 8 nights/9 days as suggested above. After this tour, you will definitely want to visit the Skardu area and in that tour, your experience at Naran and Babusar will be useful.
Let us know how it goes. Best wishes for a safe, happy, healthy journey! Bon voyage
Shaqeeq.