My biggest word of advice is know your songs back to front. The first time I plauyed out, the booth monitor was completely fucked. All I could hear was distortion so I relied heavily on just using the headphones. From this, my transitions weren't as smooth as they could have been, cause I'd dropped a track too early or left one playing too long. Try and fill your set with songs that you are super familiar with, so you avoid having the same problem I did.