On a local club scale I would look to make 50-100 a night.
We give our guy a 75% cut of what we make. We could do it without him but he really helps a lot. Ours is a jack of all trades, he runs the lights, strings guitars when I break a string. Basically takes care of all the little issues that come up. "Hey, bring me a beer!". I dont mind loading cabs cause I have the trailer and I use a nice dolly, but I hate rolling cords at the end of the night, I dont know why but I hate it.
Running sound is tough cause a lot of bands I used to work with just didnt sound that good to begin with.
One word of advice on loud guitarist and I am one is if they wont cooperate turn their amps in on the band, so you arent getting the amp blow.
"A winks as good as nod to a blind man"