I have absolutely no idea about how CVT will fare on the climb and also there is the issue of low oxygen in that area.
Regarding manual BRV you will have to wait till august or september because I will visit Hunza then and I will be going through this area and I will actually come to know about it on my return trip back to Lahore from Hunza god willing.
Yes I would recommend this car more so for those person whose family consists of 5 persons. You have a lot of room in BRV, pick is good better than any 1.3 car, and definitely better than any other 1.5 crossover like Rush, Avenza etc. Both Rush and Avenza have 7 seats and both cost nearly 20 lac more than the BRV and both produce only 103 horsepower while BRV produces 118 horsepower with 145 newton of torque. Rush goes 0-100 in 13 plus seconds while BRV is 10.5 seconds. There is pick in even the 6th gear