I’ve been working in the live music scene since 1981 and I am happy to offer free advice, particularly anything involving sound reinforcement. If you’re one of my clients it is in my interest to steer you in the right direction.
Contact me by e-mail or phone, If I can’t help you, I should know of someone who can.
I also strongly suggest you buy Live Sound Mixing, the book by Duncan Fry, if you want to know more about live sound mixing.