My band is wanting to downsize from a Soundcraft Signature 22 to something easier to transport. We potentially need 8 channels for drum mics, 5 vocals, we occasionally mic guitar amp, and we have two keyboards. I’m no audio engineer and could use some suggestions on what size board to get. We want analog. I have an 8 channel stage box but it’s still 8 channels. Should I get a separate mixer if we get a 12 channel board? And how does it connect to main mixer?