I'm starting a post hardcore band, I myself am a guitarist but we're going to need something for both lead and backup vocals. We're playing post hardcore so were going to go back and forth between screams and clean vocals. I know we're going to need something loud enough to be heard over 100w amps and a drum set. I'm inexperienced when it comes to PA's and my vocalist is on the young side (17) so he can't drop several hundred dollars on this regardless of how committed he may be. Can anyone tell me what we need and how much we're looking at spending?