It's really not that much equipment. Drumset, keyboards, a bunch of guitar amps. Perhaps some horns if your music has that. The rest is local sound and light eq

It's really not that much equipment. Drumset, keyboards, a bunch of guitar amps. Perhaps some horns if your music has that. The rest is local sound and light equipment that is already at the venue. You need 1-2 to load/unload all that and you are set. A band of 6 can tour with 8 people no problem. That's only a 33% overhead. (Then you also need to rent a truck and drive it around, but you can do that pretty cheaply too.) Main issue is that the 100% baseline is already too little. No matter that overhead.