I am hoping someone out there can help me out with a live mixing solution. I have a PX-5S and a Numa Organ 2 and I use MainStage connected via USB for some additional sounds (using the Numa as a controller as well as organ). I need to effectively mix all three sounds before going stereo out to the house speakers (L/R going to two DI boxes and using two channels on the house system. I do not need any monitoring system built in because I use an Aviom in ear - through the house. Just trying to mix three sounds at my station, and send stereo to the house. I play at a church, and am looking to get something new to leave there at the church so I am not packing more stuff back and forth. Is there a one stop shop solution, like maybe getting a Pre-Sonus with enough line inputs for my two keyboards and forget the extra mixer? Can it all me mixed through the Pre-Sonus? Are there any better solutions? Thanks!