Ok! 1st gear is soooo short! Feels like its faster to start on 2nd

At the track? The car is much stronger from 0-60 but do you think Im losing with shifting each second... Next weekend IŽll test it at track...What should I expect?
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Ford Mustang -87 With K&N filter and walker exhaust.14,61 and 95,5.
4,10 rear before june 2001.