mingalababya, by the sounds of it you passed Flight Planning - congrats !
As I have said before, most candidates finish FP in less than half of the allocated time, using shortcut techniques. I think if FP were done in detail with all workings shown, it could take at least an hour more than the present allocated time.
I agree that the Aero and Systems exam should be shortened. The longer you sit in the exam room, the more likely you're going to doubt your (correct) answers !