The first one-man-band I saw had bass pedals, electric drums, and a synth on top of a grand piano. He was fantastic, everybody loved him.
1-What we are dealing with today is it possible to play the song with all the sounds and lines that identify the song with my keyboard. If not use whatever you need to sound good.
2-Everything else is based on personal need and desire. I want to be me because I like being me --- I like playing music. When I was playing out I used midi files or whatever when the extras were needed to establish the song. I did not play over any of the line dance songs; I played the original songs.
The OMB who was the most popular joined the dancers with his wireless mic and joined in the fun. Most of the people did not know he was not playing the sax, guitar or keyboard; he just fingered them. If it came to that I would stay home.
Bernie I have heard you play, you’re good so do whatever pleases you. The next day you can change and do whatever comes to mind.
John C.