[Callers] Opinions on Sound Equipment Needed

Hi All, We are shopping for sound equipment. We hold dances in a small extremely live hall. We get from 30 to 50 dancers. We also do gigs in other halls for up to 100. We are a community band: good musicians with, sometimes several sit-ins (also good): We are 2 Fiddles, 1 recorder/clarinet/saxophone (i.e. one person, who switches between these instruments), 1 Silver flute, 1 Irish (wooden) flute, 1 guitar (with pick-up soon I hope), 1 keyboard, 1 Bodhran, sometimes 1 added Bodhran, rarely another guitar, a stand up Acoustic Bass, and an Acoustic Piano (in place of keyboards). With Caller at most we need 12 inputs. Below is a list of the equipment we are considering. We are relatively new to equipment of this caliber. Ease of use is an issue. We are choosing from among the following. Do you have experience with these? Do you have preferences? MIXERS: 1. Allen & Heath PA20 - 16 mono inputs plus 2 stereo inputs, and a built-in equalizer OR 2. Soundcraft MPM12/2 - 12 mono inputs plus 2 stereo inputs. Would require an added equalizer, possibly the dbx 231 31-Band Graphic Equalizer, from Sweetwater Speakers We are thinking of using 10" powered speakers, 2 for the room, and 2 for monitors. The two we are choosing between are: 1. Mackie SRM 350 OR 2. RCF ART 310A To this we would add a caller's monitor TC-Helicon VoiceSolo VSM-200 MICROPHONES 1. Dynamic Vocal Mikes - Either Shure SM 58, OR Shure Beta 58 2. And for General Purpose Mikes: Shure SM 57 What has you experience with this equipment been. Thanks for you help, Rickey Holt.