can anyone tell me if the flight path will go over Carlisle
It already does and no change is planned to the runway alignment. If you haven't noticed any planes yet, you won't notice them in future.
What bothers me - and I can't see any evidence that anyone's raised it - is commercial passenger transport aircraft regularly flying within a mile of the Spadeadam range boundary and in an area where high energy manoeuvring by military fast jets is the main aviation activity. And all this to an airport with no radar, next to a military range that has radar but doesn't normally provide air traffic services to civil aircraft.
NS