Alright, so right now i have a mackie 406m powered mixer (500 watt) but no speakers . We have band practice in my basement, where we have drums and guitar and everything. HOWever, we have no way of using vocals atm, and so we were looking to purchase a PA... severeal floor monitors.. maybe two or three, and probably two FOH speakers. What would be a cheap way of doing this but still getting a good sound? Should I buy a seperate mixer / poweramp? And dose anyone know where i can get monitors for cheap and stuff?