High Ceiling Event. Need recommendation/opinion?

[Shardulmahida]

Hi everyone I am new to this so just bear with me. I have been to this site for many and many recommendation, but now I am stuck with this question and can't seem to find the answer anywhere. I have an event at temple university that i have to photograph next week. Its in a hall with high ceilings and cant seem find any information on how I can better my chances to get good pictures. The hall is at temple university mitten hall great court. I want some opinion/recommendation on how to tackle this high ceiling problem. The event is held from 5-10. I am going to be using Canon 5d mrk II with Canon 50mm f1.2, Cannon 135 f2, Canon 24-70 f2.8, and a sigma 70-200 f2.8, YongNuo Yn-468 E-TTL flash on camera, and off camera flash YongNuo Yn-560 ii triggered with YongNuo RF-603 triggers. With a back-up camera t3i. Any recommendation would be greatly appreciated so thank you ahead of time
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[tirediron]

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