I did something similar years ago. I made a hinged panel surround that was made of Luan mahogany panels. It was light enough to fold up and carry away. It may not have been a fancy as this one, but sure hid all of my wires and pedals well. I, also, did what Jerry did for my DX7, but it stayed home.
_________________________
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact