I'm somewhat surprised how long it took this thread to conclude that the runway would be too short. It was obvious to me just reading what the OP wrote and I'm only a ex glider pilot who never had to worry about this stuff.
Forgive me if I'm wrong but I get the impression that some of you might be "working the equations" without considering what the answers really mean. This suggests that a minor error in doing the sums could produce an answer thats just accepeted without question and leads to an accident.
The statement "in which case the runway is too short" should be in the SOP but it shouldn't need to be in the SOP if you get what I mean.