Doing sound for 4 bands, our first gig...Here's what I have (or have coming) for gear: (All Yorkville, being a Canuck) AP812 Powered Mixer A, B Amps 450 watts into 4 ohms Pr. YX15's 300 Watts pgm Plan to use these as FOH Pr. E12's or PL10's for stage monitors (the E12's are probably the best spkr I have) 4 stands LS200 powered sub Also have rack with : AP2020 (600W into 4 ohms) AP500 (250W into 4) SRV2000 Verb Heavy/loud young rock bands Plan to use the PA for vocals & keys only. What is the optimum way to go? Just use the powered mixer and leave the other stuff at home?