if its a 3" trackball you are installing, the mountain plate is about 9" so straight away it takes up about 10" so that leaces 10" for your set up.
ive did a golden tee cp, the trackball plate in that is about 14" so i didnt have much space for the rest of set up, so i cut into the mountain plate to install button holes.
so meausure the plate and that will let u know what space you have to play with.
my cp hangs over the side a tab (about 1" each side)
do what ever sets the look of the cab off, if its 4 player set up, as i was going to do then i asked how many times will i use this set up, 2 player maby better as there is only few 4 player games, the second graph you made \____/ looks good