thank you so much for the suggestion, I'm pretty well sold on the this guy for my controller after looking at your suggestions, however, I want to make sure I can do stuff such as record a (real live) drums loop when paired with that midimixer. I will definitely be needing some sort of PA system which I am unsure what I would need for that as well (active/passive speakers, amps, etc?). and I was thinking about the scarlet 2i2 for my interface, but that only has 2 inputs, so I'm unsure of how I would be able to get 4+ drum mics, bass, keys, and guitar into that. (unless i go through another mixer?).
Another concern is my laptop, I don't know if you looked at the specs, but it is not the most powerful laptop, so I need to know if that needs to be my first purchase before the software and other devices. My drummer will not have his own laptop as we are mainly just going to be live looping and bringing in minimal samples and clips (don't know the actual terms) during the live performance. Is there a device where he can correct the bpm/ control it if he gets off beat?
Lastly I know we're gonna need some in-ears to hear a click and feedback, so what supplies do I need for that?