Goal Setting

I have design analysis that requires me to measure the volumeflow through 70 different channels. Does it make more sense to setall of these as goals before the run or measure them after the run?I am concerned that 70 goals could put my solve time through theroof or that somehow measuring afterwards won't be as accurate.Does anyone have experience with this and which direction theyfound more satisfactory?

Thanks,
KenSolidworksFlow Simulation