When I said tight I meant in the cabin being a non wide body, not range though it would be tight. Their current 752Ws would be ok but the cabin would need reconfiguring for a regular service to ISB. Runway at LBA should be fine for 752Ws to ISB but could restrict payload on hot no wind days, though 14 departures should help here. Of course the biggest problem would be getting approval from Pakistan for the service. This is why I don't see it happening unless Air Blue or Shaheen are interested.