I have assembled a "perfect" sound system for out of doors concerts. Took a long time and much study. To "heavy" (weight & sound)for indoors.
Bought the Peavy all in one light weight boombox looking system. Works great indoors!!! Peavy did their homework! Use one mike (Sure 55) on a very light tripod stand. Five Bluegrass musicians can work the mic just like the old days adding much to the visual appeal of the act. The stand up bass remains six feet to the rear with excellent results. The Peavy unit retails for ~ $700 but it can be had for $500. The one mike is the answer to many problems not room enough here to address. IMO "Working" the mic is just part of a good musicians duties. cheers MT