This is a mix that I played 8 songs at the same time with it's harder than it looks but it turned out alright after trying it several times.
set up used:
speakers and sub
easycontrol.9 midi controller
lightning to usb and charging adapter
laptop stand with cooling pad (which the iPad gets hot since the app its powerful)
portable charger to power up fan and charge the iPad
Here's a video tutorial that I made to show you how I did it