Stopways can form part of the Accelerate Stop Distance. The Take Off Distance Available (TODA)is the TORA plus stopway. Any Takeoff performace is a balance between all three and any obstacles in the take off path. The easliest way is to get a computer analysis of the aircraft and play around with the various criteria.
At Manchester many years ago they extended the Runway length and it didn't make any difference to the performance of a 737 because they were limited by the obstacles. Removing a "few" trees improved the Take off performace to max RTOW.