I am using a delta 410 for my audio interface. It has two analog ins, and 10 analog outs. I want to incorporate a mixer into my setup, so that I don't have to unplug my guitar, to plug in my bass, or unplug my microphone to plug in my keyboard. Would one mixer be enough? I was thinking about getting something with at least two buses. I would use the main bus to go into the 410 on the two analog ins. Then put the outputs on the aux bus, and send the main outs to my monitoring system. Will this work? I have never worked with a mixer, so I don't really know how the buses and stuff work.