Zuki, I’d recommend a ‘leg at each corner’ type stand for any proper piano touch instrument. Real pianos don’t wobble, and there are several reasons why supporting them in the middle leads to problems…

For starters, yes, you are going to have to play a fair bit harder than a lightweight arranger action. The keyboard is also much wider, which means forte playing at either end puts more motion into the keyboard. The end result is more ‘bounce’ if you’re playing hard (remember, the whole POINT of a weighted piano touch action is the control of dynamics from ppp to fff…!).

Why is this a problem? Well, a piano action (and any velocity sensitive keyboard action) determines how hard you are playing by sensing the speed at which the key is depressed. But this assumes that the keyboard isn’t moving! If the keybed is bouncing up or down, that motion is either added to or taken away from the force YOU used, leading to inaccurate tracking of your playing.

Not only should your stage piano SOUND like a piano, it should feel like a piano… and pianos don’t bounce!