Honestly, you're not going to be happy with this.
Things that jump out at me...
-Spinner and trackball are too far forward, you're going to have to lean across the panel to use them, while keeping your other hand in the normal position.
-Your alternative is the opposite problem
-Your trackball position means you have to keep your trackball hand and button hand too close together, it'll be uncomfortable
-Those button layouts won't work, but you did note that
Honestly, the only way I've ever seen a fixed panel work is if it's only doing one thing, meaning it's either joysticks or trackball spinner. You'll get annoyed with it fairly quickly and start working on something else. My advice to you is...
1. Make the control panel a removable box, make two and have the second one dedicated to trackball/spinner
2. Make removable control panel tops, make two and have the second one dedicated to trackball/spinner
3. Make a modular panel, and when the controls are all out, have the replacement make it look like furniture.
Quite honestly, if you're dedicated and good enough to be thinking about making it look like a piece of furniture, doing the modular panel would likely be easy for you and end up being nicer. You can get it to really look like a tall table when not in use with modular. Especially if you put some tall fancy bar stools beside it and make it look like a sitting area.