the one thing that has not been mentioned is that the track would pay a part in this question if you had a large track with long straights yes you would reach peak revs faster with lighten flywheel but you don't want to be at peak revs for long or will blow engine so gearing comes into question wich could slow acceleration. if it is short and techical by all means a lighten flywheel would be best, but you could gear a standard flywheel for similar acceleration.
from my experience over the last 12yrs+ with road and race cars it would come down to persons choice there is no right or wrong answer to this question: Yes lighten flywheel- faster acceleration, faster deceleration
Yes standard flywheel- slower acceleration, slower deceleration
but with standard flywheel the extra weight would help you keep some engine momentum for acceleration.
the only way to answer this, is for people to try both on the same track an see which works best for them, if you are faster with lighten stick with it, if you the same or slower with lighten you know the choice is harder which way to go.
sorry long winded but my 2 cents worth