I usually am one of the DJ's and trust me DJ's don't work for the money.
Problem is takeing readings on a system that loads keep changing is pointless.
Will simply try to first balance the loads on the constant items like lights, sound equipment, frig's, and freezer. Then try to balance out the 120 loads like the smaller AC units. Hardest part is the Mr Coffee , popcorn maker, crockpots. I do believe i can keep the loads to below 100 amps each line.
Are there any cheap ways to remotely monitor the amps by way of CT's ? Would need be wireless.