Jerry look into putting all your gear into a rack system somehow in and out plugging into the PA system and you are ready to go it's a very personal choice everybody does it different... Talk to Gary Diamond he can build you a Gig Rig console of some kind for easy setup and take down... good luck

Ps any pics of your setup will help also?

Jerry or try your midi Accordion/Keytar,Midjay, Mic, plugged into the great sounding
JBL Eon One...just roll it in...plug both in the onboard mixer with FX and start to play....love both of mine.