Acapella Audio Setup for Backyard Celebration

I need a professional audio setup for a five-person acapella group at a backyard celebration for 100-150 guests. I require both portable speakers and a mixer.

Key Requirements:
- Five microphones (brand/model flexible)
- Audio technician to manage setup and performance
- Power outlet needed for the system

Ideal Skills and Experience:
- Experience with live audio mixing and managing sound for vocal groups
- Knowledge of portable speaker setups and mixers
- Ability to set up and take down equipment efficiently

Please include any relevant experience in your bids.