Hi Gary, really didn't appreciate the amount of talent, effort and imagination that you spent, until I saw a show on a fellow doing the same time of work. Impressive! How are you doing?
You'll get a kick from this: I am drifting away from the stereo pa setup. I used (2) Pro + for a month and really liked them. During a show, one speaker lost its battery. It was pretty stark to hear

So I put the ONE on a pole about and behind me and was amazed how closely it sounded to 2, thus leading to my purchase of the Bose L1 Pro 8. I think the low and high separation and vocal clarity will be a real winner. I do know some pianos and other sounds are a bit thin, but not my much.
How did you set up your keyboard. I am not going to use a mixer. Some say to just go L out of the Korg into one of the Bose channels. Will I get a good sound that way, close to stereo, or any suggestions appreciated. Jim