Many go through that "PIANO" phase when in reality you are not trained to do so because your a arranger KB or Guitar player etc,...years ago I tried the piano route and after a few weeks returned the weighted key digital piano. At least I got that dream out of the way...
You have to know your limits and expertise.....maybe a being your a really good Guitar player and a Ketron SD90 module for styles & vocals etc, would be your ticket to success on stage and just fool around with the Casio piano at home just sayin'? Who knows until you try?
....good luck