This can take quite a while. Is there a better way to estimate things to speed up my setup? Would it help if I got a light meter to trigger the flashes and measure the exposure?
Honestly, experience speeds up your set up everything takes practice and getting used to

its hard to give you a direct work flow as everyone does things differently. For example, I dont turn things off to save power, I leave my flashes and triggers on, they go to sleep when inactive, and I wake them up again when I press the shutter button. No need to manually go up to them to turn the on-off switch.