Bro keep this thing out of mind that India or Pakistan Air Defense is impenetrable history on repeated basis prove this due to close proximity one can enter into the air space of other country so here what should we give importance is the reaction time, which even if is good enough there are chances of it turnout little too late to response in some scenario as in the case of Balakot and you rightly noted it ....
We must go for SAM coverage in addition to CAP ....
Anything flying in AJK would get locked by IAF jet and SAM I mean it's just a strip of land which in widest stretch is just 60+ KM and at some place is narrow upto 10KM
Yaap an ideal place as all the existing facilities are already in place, but we should keep Saidu Sharif Airport as future option it is almost in center of Peshawar, PAF base Minhas, Islamabad and Muzaffarabad City as its distance vary from 90-120 km from all these cities and air bases and from Gilgit in Northern Area and from Srinagar it is situated within 240 Km ....
150 and 100 CAP from Saidu Sharif and Chaklala would give almost full coverage to AJK and would complement each other nicely just have look at screenshot below
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