First Time Gym Event

[Fotografer]

Got a shoot this Saturday of this Capoeira event and I just found out today it will be in a gym. </p>
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<p>I've never shot in a gym before so i'm looking for a few tips. </p>
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<p>I'll be using a d200 with an 18-70 3.5 and was thinking to just throw one of my yn460s on it with a lightsphere diffuser. y/n?</p>
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<p>All I see online is to shoot high ISO, and that is a pet peeve of mine. </p>
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<p>Anyone have any tips/experience shooting in gym? </p>
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<p>Thank ya</p>
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