The F-16s that arrive after MLU from Turkey and US will be stationed at PAF Base Shahbaz. They will stay there until the pilot conversion training is over, and then they will move to their respected Squadrons/Bases. So yes, all PAF F-16s will be shifted to PAF Base Shahbaz but for a short time.
And JF-17 Block II's second squadron will be homed at PAF Base Shahbaz, it will replace the Mirage.
there are no more mirages at Shahbaz.. All have been shifted to other bases.