Boo,
since youlike the sound and power of the little Rogue so much - use THAT as your mixer and feed the signal into the EV up on a pole. That'll give you dedicated EQ, effects and monitor at the stage area, and a separate volume, EQ-able speaker/amp for the crowd to hear. It'll be mono, but until you decide what to use .... this is a fast, easy option that uses what YOU OWN.