We have a very easy setup - we run direct for everything except drums.
We all use in-ear monitors and control our own mix so we don't need floor monitors.
We don't have any amps or cabinets on stage; just drums and one rack that holds everything else.  We have our own wireless mics and stands for three vocals across the front of the stage.

When we do events where someone else is running sound for FOH; we normally just roll in our rack; mic up the drums and then I have a split snake that takes a feed off of every line and we hand that to the FOH engineer and they plug it into their snake and have complete control of FOH mixing.  It's a super quick and easy setup and every sound company we have worked with has loved how easy our setup is.  If you have your own mics for drums that you prefer to use; that's fine too. Some engineers prefer to use their own and we're fine with that.

There are four of us - but essentially we're a three piece band (drums, bass, one guitar) with three vocals and we use backing tracks.

We typically use 13 channels

01 - Kick
02 - Snare
03 - Tom 1
04 - Tom 2
05 - Floor Tom
06 - HiHat
07 - Overhead
08 - Bass
09 - Guitar
10 - SR vocal
11 - Lead vocal
12 - SL vocal
13 - Backing track