i'd say that length is fine, my partner's act is 2:13mins and it's always re-booked...
if you can present a wonderful two mins, opposed to a drawn out 3 min act then the length won't matter...
i normally cut my music to about 3:15 but don't forget you can ask for the music to begin after you have begun on stage or finish before you leave...
if not, try and find some incidental music in the track, like a repeatitive theme that you could segue into the beginning, perhaps at a lower volume as an intro??
xx
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