I would suggest OMNI directional mikes, rather than UNI directional. UNI's are just too hard to get into. Also, check the impedence values on mikes, you need a large range.

Equipment needed for gig: 1 fiddle, 1 bow. Rosin, tuner, accompniansts optional. Sheet music and music stand VERY optional. Sound Person== good. Then one of you does not have to run to the Board every time you get feed back because somebody does something stoopid. Floor monitors==good. I played without them for years, and the first time I played under one I was BLOWN AWAY!!