I've been offered to record/mix a band's last show and am looking for some advice for those of you who may have done so before. They're a heavy, downbeat hardcore band playing at the Camden Underworld (small stage) and the crowd are going to be insane - stage-diving and knocking shit everywhere for certain. My plan was to take a mic splitter before it gets to the desk and record it on my Macbook Pro via a Focusrite Saffire Pro 40 and Behringer ADA8000. If the sound guy isn't willing then I'd just take it after the pre from the sends on the desk. If anybody has any wisdom regarding logistics/best practice etc I'd really appreciate it.