You may have to make some of your cabling longer for rotation, dont worry all your wires will go further, except for the sparkplug looking one, but if you are rotating it likely will be okay since the tube's end will remain in relatively the same place.
Just put a shelf in under the screen.
To the left is where I wired in the machine's speakers into the PCB.
The shelf is great for holding my power strip too.
Dont worry that rats nest in the bottom is gone now...